Properties of the Number 51155

Fifty-One Thousand One Hundred Fifty-Five

Basics

Value: 51154 → 51155 → 51156

Parity: odd

Prime: No

Previous Prime: 51151

Next Prime: 51157

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 5 × 13 × 787

Divisors: 1, 5, 13, 65, 787, 3935, 10231, 51155

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1100011111010011

Octal: 143723

Duodecimal: 2572B

Hexadecimal: c7d3

Square: 2616834025

Square Root: 226.17471123005774

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

Replace 2n+1 with concatenation of its divisors >1. A37287

Number of permutations of length n which avoid the patterns 231, 51234. A116848

a(n) = (2⁵ⁿ⁺¹ - 1)/(2⁵^n - 1). A51155

a(n) = ∑_{x₁+x₂+x₃+x₄=n, 0 <= x₁, x₂, x₃, x₄ <= n} (3·n)!/((n-x₁)! * (n-x₂)! * (n-x₃)! * (n-x₄)!). A348700