2275
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 3472
- Proper Divisor Sum (Aliquot Sum)
- 1197
- 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
- 1440
- Möbius Function
- 0
- Radical
- 455
- Omega Function (Ω)
- 4
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 19
- 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
- Sum of fourth powers: 0^4 + 1^4 + ... + n^4.at n=6A000538
- a(n) = 1^n + 2^n + ... + 6^n.at n=4A001553
- Number of partitions of floor(5n/2) into n nonnegative integers each no more than 5.at n=23A001975
- Octagonal pyramidal numbers: a(n) = n*(n+1)*(2*n-1)/2.at n=12A002414
- a(n) = n*(n+1)*(n+2)*(n+7)/24.at n=13A005582
- a(n) = n*(n+4)*(n+5)/6.at n=21A005586
- Successive integers produced by Conway's PRIMEGAME.at n=5A007542
- Coordination sequence T3 for Zeolite Code LTN.at n=33A008142
- Coordination sequence T4 for Zeolite Code -PAR.at n=34A009858
- Coordination sequence T1 for Zeolite Code WEI.at n=34A009917
- Expansion of e.g.f. arctan(log(x+1) - arcsin(x)).at n=9A013225
- Expansion of e.g.f. tanh(log(x+1) - arcsin(x)).at n=9A013229
- Numbers n such that phi(n) * sigma(n) + 16 is a perfect square.at n=39A015729
- Numbers k such that k | 7^k + 7.at n=19A015893
- Expansion of 1/(1-x^9-x^10-x^11-x^12-x^13-x^14-x^15-x^16-x^17-x^18-x^19).at n=56A017886
- Coordination sequence T1 for Zeolite Code CGF.at n=33A019451
- Number of 4-ary search trees on n keys.at n=11A019498
- Pseudoprimes to base 51.at n=16A020179
- Pseudoprimes to base 74.at n=21A020202
- Numbers whose base-2 representation is the juxtaposition of two identical strings.at n=34A020330