Properties of the Number 51405

Fifty-One Thousand Four Hundred Five

Basics

Value: 51404 → 51405 → 51406

Parity: odd

Prime: No

Previous Prime: 51383

Next Prime: 51407

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 23 × 149

Divisors: 1, 3, 5, 15, 23, 69, 115, 149, 345, 447

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100100011001101

Octal: 144315

Duodecimal: 258B9

Hexadecimal: c8cd

Square: 2642474025

Square Root: 226.72670773422348

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

Number of labeled loop-graphs with n vertices and at most as many edges as covered vertices. A369196

Smallest odd number k such that p(2m)-2p(m)=k has exactly n solutions (where p(m) = m-th prime). A69890

Number of ways to tile a 2 X n grid with dominoes and L-trominoes such that no four tiles meet at a corner. A329185

Numerator of Euler(n, 3/26). A157038

Number of connected 6-element multiantichains on a labeled n-set. A94738

a(n) = (3ⁿ+1)*(3ⁿ⁺¹+1)/4. A51405