5494
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 8568
- Proper Divisor Sum (Aliquot Sum)
- 3074
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2640
- Möbius Function
- -1
- Radical
- 5494
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 67
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 74.at n=1A031572
- "DGK" (bracelet, element, unlabeled) transform of 2,1,1,1,...at n=26A032232
- Numerators of continued fraction convergents to sqrt(641).at n=4A042230
- Numbers whose base-5 representation contains exactly three 3's and two 4's.at n=11A045306
- Sum of a(n) terms of 1/k^(8/9) first exceeds n.at n=15A056185
- Diagonal of triangular spiral in A051682.at n=34A081270
- Main diagonal of array A082224.at n=37A082227
- Number of subsets of {1, ..., n} that are sum-free but not double-free.at n=19A088811
- Numbers k such that 9^k + 2 is prime.at n=18A090649
- Positive integers not appearing in sequence A098572, which calculates the values of floor(sum(m^(1/m),n=1..m)).at n=37A098573
- Each term is previous term plus ceiling of geometric mean of all previous terms.at n=55A114830
- a(n) = 4*n^2 + floor(n/2).at n=37A173511
- Number of (n+1) X 3 binary arrays with rows and columns in nondecreasing order and with no 2 X 2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=16A184064
- Number of strings of numbers x(i=1..4) in 0..n with sum i*x(i) equal to n*4.at n=28A184704
- Number of 4 X 4 X 4 triangular 0..n arrays with every horizontal row nondecreasing, first elements of rows nonincreasing, last elements of rows nondecreasing, and every row having the same average value.at n=9A215184
- Number of nX2 arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 nX2 array.at n=4A218175
- Number of nX5 arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 nX5 array.at n=1A218178
- T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 nXk array.at n=16A218181
- T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 nXk array.at n=19A218181
- T(n,k) = Number of n X k arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..3 n X k array.at n=19A220761