5606
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 8412
- Proper Divisor Sum (Aliquot Sum)
- 2806
- 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
- 2802
- Möbius Function
- 1
- Radical
- 5606
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 98
- 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
- yes
- Odd
- no
Appears in sequences
- a(n) = solution to the postage stamp problem with 3 denominations and n stamps.at n=43A001208
- Coordination sequence T4 for Zeolite Code FER.at n=46A008109
- Numbers k such that the continued fraction for sqrt(k) has period 50.at n=36A020389
- a(n) is the smallest number that is the sum of 3 nonzero squares in exactly n ways.at n=31A025414
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 74.at n=11A031572
- Number of partitions of n such that cn(0,5) = cn(1,5) < cn(2,5) = cn(4,5) < cn(3,5).at n=69A036874
- Maximal base 7 run length is 4.at n=25A037991
- Numbers whose base-7 representation contains exactly four 2's.at n=13A043404
- Numbers which need 12 'Reverse and Add' steps to reach a palindrome.at n=39A065217
- Number of unlabeled, connected graphs on n vertices with no induced subgraph isomorphic to a K_4, where a K_4 is the complete graph on four vertices.at n=7A079574
- a(n) = A083710(n) - A000041(n-1).at n=61A083711
- When A032523 is a maximum; or, A091657 less duplicates.at n=14A091658
- Numbers n such that (58*100^n - 157)/99 is prime.at n=8A103110
- Coefficients of replicable function number "48h".at n=51A112192
- Eigensequence of triangle A054142.at n=7A144251
- Eigentriangle, row sums = A144251 shifted, right border = A144251.at n=35A144252
- Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 6 and every element equal to at least one neighbor.at n=2A146198
- a(n) is the number k such that 2^(2k+1)-1 = A000668(n+1).at n=21A146768
- Number of binary strings of length n with no substrings equal to 0001 0101 or 1010.at n=12A164472
- Least happy number with next happy number of distance n.at n=21A193573