2057
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 2394
- Proper Divisor Sum (Aliquot Sum)
- 337
- 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
- 1760
- Möbius Function
- 0
- Radical
- 187
- 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
- 112
- 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
- A Fielder sequence.at n=11A001645
- Numbers that are the sum of 11 positive 10th powers.at n=2A004811
- Numbers that are the sum of 10 positive 11th powers.at n=1A004821
- Numbers that are the sum of at most 11 nonzero 10th powers.at n=32A004906
- Numbers that are the sum of at most 12 nonzero 10th powers.at n=34A004907
- Numbers that are the sum of at most 10 positive 11th powers.at n=20A004916
- Numbers that are the sum of at most 11 positive 11th powers.at n=21A004917
- Numbers that are the sum of at most 12 positive 11th powers.at n=22A004918
- Centered icosahedral (or cuboctahedral) numbers, also crystal ball sequence for f.c.c. lattice.at n=8A005902
- Number of symmetry sites in all planted 1,3-trees with 2n nodes.at n=11A007135
- Coordination sequence T3 for Zeolite Code MEL.at n=29A008152
- Coordination sequence T2 for Zeolite Code -CHI.at n=29A009847
- A B_2 sequence: a(n) = least value such that the sequence increases and pairwise sums of distinct terms are all distinct.at n=37A010672
- Numbers n such that there are no primes between S(n) and S(n+1) inclusive where S is the Kempner function A002034.at n=1A015048
- a(n) = (2*n - 5)n^2.at n=11A015240
- Expansion of 1/(1-x^8-x^9-x^10-x^11-x^12-x^13-x^14-x^15-x^16-x^17).at n=51A017875
- a(n)-th squarefree is sum of first k squarefrees for some k.at n=39A020643
- Convolution of natural numbers with Beatty sequence for the golden mean A000201.at n=18A023541
- Numbers that are the sum of 3 distinct nonzero squares in exactly 9 ways.at n=37A025347
- Triangle of numbers of permutations eliminating just k cards out of n in game of Mousetrap.at n=40A028305