5074
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 7920
- Proper Divisor Sum (Aliquot Sum)
- 2846
- 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
- 2436
- Möbius Function
- -1
- Radical
- 5074
- 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
- 134
- 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
- Coordination sequence T2 for Zeolite Code EUO.at n=44A008097
- Numbers k such that the continued fraction for sqrt(k) has period 66.at n=16A020405
- a(n) = floor(a(n-1)/(sqrt(5) - 2)) for n > 0 and a(0) = 1.at n=6A024551
- Sum{T(n-k,k)}, 0<=k<=[ n/2 ], where T is the array in A026374.at n=16A026385
- 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 70.at n=12A031568
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 30 ones.at n=41A031798
- Product of next n numbers + sum of next n numbers.at n=3A077544
- Numbers k such that numerator of Bernoulli(2*k) is divisible by 37 and 59, the first two irregular primes.at n=20A092231
- Number of 5k+3 primes (A030431) in range ]2^n,2^(n+1)].at n=17A095023
- Number of squares on infinite quarter chessboard at <=n knight moves from the corner.at n=38A098500
- Trajectory of 1001 under "3x+1" map.at n=8A100709
- Numbers n such that p(5n) is prime, where p(n) is the number of partitions of n.at n=17A114166
- Trajectory of 4 under map k -> A094077(k).at n=50A117149
- A linear recurrence sequence: a(n) = a(n-1) + a(n-3) + a(n-5) + a(n-6).at n=21A128429
- Sum of all primes from n-th prime to (2*n-1)-th prime.at n=27A161463
- Number of n X 2 1..4 arrays with all 1's connected, all 2's connected, all 3's connected, all 4's connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, 4 in the lower right corner, and with no element having more than 2 neighbors with the same value.at n=35A164754
- Product plus sum of four consecutive nonnegative numbers.at n=7A166941
- Half the number of (n+1)X(n+1) binary arrays with no 2X2 subblock containing exactly one 1.at n=2A184188
- Half the number of (n+1)X4 binary arrays with no 2X2 subblock containing exactly one 1.at n=2A184191
- T(n,k)=Half the number of (n+1)X(k+1) binary arrays with no 2X2 subblock containing exactly one 1.at n=12A184197