Properties of the Number 55566

Fifty-Five Thousand Five Hundred Sixty-Six

Basics

Value: 55565 → 55566 → 55567

Parity: even

Prime: No

Previous Prime: 55547

Next Prime: 55579

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ⁴ × 7 ³

Divisors: 1, 2, 3, 6, 7, 9, 14, 18, 21, 27

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100100001110

Octal: 154416

Duodecimal: 281A6

Hexadecimal: d90e

Square: 3087580356

Square Root: 235.7244153667583

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Numbers which have only digits 5 and 6 in base 10. A256291

G.f. A(x,y) satisfies: A( x - x·y*A(x,y), y) = x + x*(1-y)*A(x,y), where the coefficients T(n,k) of xⁿ*y^k form a triangle read by rows n>=1, for k=0..n-1. A291820

Triangle read by rows: T(n,r) = number of maximum r-uniform acyclic hypergraphs of order n and size n-r+1, 1 <= r <= n+1. A135021

Numbers whose product of exponents is equal to the sum of prime factors. A71175

a(n) = n³ if n odd, 3·n³/4 if n even. A309337

a(n) = ∑_{k=0..floor(n/2)} n^k * |Stirling1(n,2·k)|. A357683

Triangle of integers used to compute column sequences of array A078739 ((2,2)-Stirling2). A89511

a(n) = 6·n³. A244726

Larger of pairs (m, n), such that the difference of their squares is a cube and the difference of their cubes is a square. A261328

Central terms of triangle A291820. A291821