Properties of the Number 55081

Fifty-Five Thousand Eighty-One

Basics

Value: 55080 → 55081 → 55082

Parity: odd

Prime: No

Previous Prime: 55079

Next Prime: 55103

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 13 × 19 × 223

Divisors: 1, 13, 19, 223, 247, 2899, 4237, 55081

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101011100101001

Octal: 153451

Duodecimal: 27A61

Hexadecimal: d729

Square: 3033916561

Square Root: 234.69341703592795

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

a(n)*a(n-9) = a(n-1)*a(n-8)+a(n-4)+a(n-5) with initial terms a(1)=...=a(9)=1. A133847

a(n) = ∑_{k=0..floor(n/3)} binomial(4·n-3·k-3,n-3·k). A390708

Number of ways to reciprocally link elements of a 4 X n array either to themselves or to exactly two horizontal and antidiagonal neighbors, without consecutive collinear links. A220709

Centered hexagonal numbers that are sphenic numbers. A382628

Number of positive integers whose harmonic mean with n is a positive integer. A55081