5626
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 8820
- Proper Divisor Sum (Aliquot Sum)
- 3194
- 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
- 2688
- Möbius Function
- -1
- Radical
- 5626
- 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
- 173
- 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
- Number of n-bead bracelets (turnover necklaces) of two colors with 6 red beads and n-6 black beads.at n=21A005513
- Coordination sequence T1 for Cordierite.at n=45A008251
- Row sums of triangle A000369.at n=4A016036
- a(n) = n*(n^2 + 12*n - 25)/6.at n=29A026057
- "BFK" (reversible, size, unlabeled) transform of 2,1,1,1...at n=24A032044
- Values of n^2 + 1 resulting from A050796.at n=41A050800
- Numbers k such that k^4 == 1 (mod 5^4).at n=36A056091
- Centered square numbers: a(n) = 4*n^2 + 4*n + 2.at n=37A069894
- Numbers k such that k^4 + 1, (k+2)^4 + 1 and (k+4)^4 + 1 are all primes.at n=6A073476
- Smallest squarefree integer k such that Q(sqrt(k)) has class number n.at n=27A081363
- Sum of ordered 3 prime sided prime triangles.at n=26A105100
- Numbers k for which 16*k+1, 16*k+3 and 16*k+15 are primes.at n=27A123997
- a(n) = 225*n + 1.at n=24A158229
- a(n) = 625*n + 1.at n=8A158383
- Lower Beatty array of sqrt(3).at n=29A182787
- Number of n X n binary arrays without the pattern 0 1 0 diagonally, vertically or horizontally.at n=3A188500
- Number of nX4 binary arrays without the pattern 0 1 0 diagonally, vertically or horizontally.at n=3A188503
- T(n,k)=Number of nXk binary arrays without the pattern 0 1 0 diagonally, vertically or horizontally.at n=24A188508
- Array read by antidiagonals, m>=0, n>=0, A(m,n) = Sum_{k=0..n} Sum_{j=0..m} Sum_{i=0..m} (-1)^(j+i)*C(i,j)*C(n,k)^(m+1)*(n+1)^j*(k+1)^(-j).at n=32A198060
- Row sums of A197653.at n=4A198256