3550
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 6696
- Proper Divisor Sum (Aliquot Sum)
- 3146
- 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
- 1400
- Möbius Function
- 0
- Radical
- 710
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 87
- 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
- yes
- Odd
- no
Appears in sequences
- Coordination sequence T3 for Zeolite Code AFT.at n=45A008028
- Coordination sequence T5 for Zeolite Code NES.at n=38A008209
- Coordination sequence T1 for Zeolite Code CON.at n=42A009868
- Coordination sequence T2 for Zeolite Code WEI.at n=42A009918
- (n-th Lucas number that is not 1) - (n-th number that is 1 or not a Lucas number).at n=15A014244
- Coordination sequence T8 for Zeolite Code TER.at n=40A016440
- Fibonacci sequence beginning 2, 14.at n=13A022369
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (odd natural numbers), t = A000201 (lower Wythoff sequence).at n=22A024599
- "BGJ" (reversible, element, labeled) transform of 1,3,5,7...at n=6A032055
- Base-7 palindromes that start with 1.at n=39A043015
- Base-9 palindromes that start with 4.at n=18A043031
- Numbers n such that string 5,5 occurs in the base 10 representation of n but not of n-1.at n=35A044387
- A class of Boolean functions of n variables and rank 3.at n=8A051361
- Sum of a(n) terms of 1/k^(5/6) first exceeds n.at n=18A056181
- Lexicographical-support sequence T(n,k), n,k nonnegative: total number of checks required by a "lexicographical" algorithm to find out which rows and columns of each of the n by k zero-one matrices are nonzero.at n=24A058547
- A hierarchical sequence (S(W2{2}*c) - see A059126).at n=8A059140
- Number of matchings in the wheel graph with n spokes.at n=12A061705
- Euler phi(n) / Carmichael lambda(n) = 10.at n=36A062377
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 80 ).at n=36A063353
- Sum of all partitions of n into distinct parts.at n=25A066189