14875
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 22464
- Proper Divisor Sum (Aliquot Sum)
- 7589
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 9600
- Möbius Function
- 0
- Radical
- 595
- Omega Function (Ω)
- 5
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 164
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- no
- Odd
- yes
Appears in sequences
- Successive integers produced by Conway's PRIMEGAME.at n=28A007542
- a(n) = n*(2*n+5)*(n-1)/6.at n=35A051925
- Numbers n that are the hypotenuse of exactly 10 distinct integer-sided right triangles, i.e., n^2 can be written as a sum of two squares in 10 ways.at n=32A097225
- Numbers n such that 9*10^n + 2*R_n + 5 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=11A103095
- Number of permutations of n distinct letters (ABCD...) each of which appears 5 times and having n-2 fixed points.at n=34A123296
- Number of distinct angles in all integer-sided triangles with all sides <= n.at n=44A123325
- Sum_{j=k(n)..prime(n)} j where k is the n-th nonprime nonnegative integer.at n=41A161669
- a(n) = A030068(4n+3).at n=44A169740
- Number of nondecreasing arrangements of n+2 numbers in 0..3 with each number being the sum mod 4 of two others.at n=40A183906
- Successive integers produced by Conway's PRIMEGAME, starting with 3 rather than 2.at n=40A185242
- Triangle a(n,k) read by rows: product s(n,k)*s(n+1,k+1) of Stirling numbers of the first kind.at n=25A187558
- a(n) is the genus of the modular curve associated to the principal congruence subgroup of level p(n), where p(n) is the n-th prime number.at n=19A191590
- Values of n such that L(18) and N(18) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=28A227521
- Successive integers produced by Conway's PRIMEGAME, starting with 6 rather than 2.at n=29A273091
- Records in A249860.at n=44A276705
- Largest finite number of distinct words arising in Watanabe's tag system {00, 1011} applied to a binary word w, over all starting words w of length n.at n=24A291067
- Denominators of rational coefficients arising from the Kashaev invariant for the 4_1 knot.at n=15A301733
- Denominators of rational coefficients arising from the Kashaev invariant for the 4_1 knot.at n=16A301733
- Numerators of the sequence whose Dirichlet convolution with itself yields A057521, the powerful part of n.at n=63A318650
- G.f. = (3*x^4+5*x^2+6*x-7)/(4*x^7+x^4+x^2+x-1).at n=16A362923