Properties of the Number 53165

Fifty-Three Thousand One Hundred Sixty-Five

Basics

Value: 53164 → 53165 → 53166

Parity: odd

Prime: No

Previous Prime: 53161

Next Prime: 53171

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 7 ³ × 31

Divisors: 1, 5, 7, 31, 35, 49, 155, 217, 245, 343

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100111110101101

Octal: 147655

Duodecimal: 26925

Hexadecimal: cfad

Square: 2826517225

Square Root: 230.57536728800847

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) = 1 + ∑_k=0..n-2 binomial(n-1,k) * a(k). A344489

Number of rooted 2-dimensional polyominoes with n heptagonal cells, with no symmetries removed. A94168

Numbers n such that n⁶+6 and n⁶-6 are prime. A239429

Number of ways to place zero or more nonadjacent 1,0 2,0 2,2 3,0 3,2 4,1 4,2 5,1 polyhexes in any orientation on a planar nXnXn triangular grid. A155440

4th-power-free part of n. A53165

Array read by antidiagonals: T(n,k) = number of rooted 2-dimensional polyominoes with k cells, the cells being regular n-gons, with no symmetries removed. A94166

Gaussian binomial coefficient [ n,3 ] for q=-6. A15273