17177
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 17460
- Proper Divisor Sum (Aliquot Sum)
- 283
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 16896
- Möbius Function
- 1
- Radical
- 17177
- Omega Function (Ω)
- 2
- 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
- 128
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- no
- Odd
- yes
Appears in sequences
- None of the digits in k is present in k^2 or k^3.at n=21A029790
- Number of partitions of n into parts not of the form 25k, 25k+6 or 25k-6. Also number of partitions with at most 5 parts of size 1 and differences between parts at distance 11 are greater than 1.at n=37A036005
- Numbers whose base-7 representation has exactly 6 runs.at n=17A043621
- Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 19.at n=9A051984
- Numbers which contain exactly the same digits (with the correct multiplicity) in 3 different smaller bases.at n=29A059828
- Semiprimes in A056105.at n=31A113519
- Number of increasing sequences of n integers x(1),...,x(n) with values in 1..3*n such that x(j) divides x(k) iff j divides k.at n=46A180380
- Number of partitions p of n such that max(p)-min(p) = 9.at n=39A218572
- Number of partitions of n such that the multiplicity of the least part is a part.at n=40A240493
- Numbers n such that the smallest exponent k for n and n^k to have common digits is 4.at n=15A253602
- a(n) = (A242804(n)-9)/12.at n=3A257044
- Numbers using only digits 1 and 7.at n=41A276039