14517
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 20982
- Proper Divisor Sum (Aliquot Sum)
- 6465
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 9672
- Möbius Function
- 0
- Radical
- 4839
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 2
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
- 58
- 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
- Fibonacci sequence beginning 1, 5.at n=18A022095
- Number of distinct resistances that can be produced from a circuit of n equal resistors using only series and parallel combinations.at n=11A048211
- a(n) = 3*a(n-1) - a(n-2), a(0)=1, a(1)=6.at n=9A054492
- Sum of prime factors of Lucas numbers A000032(n),n=0, n>=2, with n=1 term added.at n=28A070827
- Sum of n-th antidiagonal of array in A081998.at n=18A082001
- a(n) = ceiling(A173510(n)/2).at n=39A173513
- Numbers k such that 9k+4 are terms in A072841.at n=37A175518
- Number of (w,x,y,z) with all terms in {0,...,n} and w=max{w,x,y,z}-2*min{w,x,y,z}.at n=20A212745
- Numbers with 3 or more prime factors (with multiplicity) such that every concatenation of their prime factors is prime.at n=16A217264
- Sum of prime divisors (with repetition) of Lucas(n).at n=27A219188
- The hyper-Wiener index of the nanostar dendrimer NS_2[n], defined pictorially in the A. R. Ashrafi et al. reference.at n=1A224453
- Odd numbers for which sigma(k) is congruent to 2 modulo 4 and the 3-adic valuation of k is one larger than the 3-adic valuation of sigma(k).at n=50A351534
- Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = Sum_{j=0..n} (-k)^(n-j) * j^j * binomial(n,j).at n=51A362856
- Expansion of e.g.f. exp(-3*x) / (1 + LambertW(-x)).at n=6A362858