Properties of the Number 53071

Fifty-Three Thousand Seventy-One

Basics

Value: 53070 → 53071 → 53072

Parity: odd

Prime: No

Previous Prime: 53069

Next Prime: 53077

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 73 × 727

Divisors: 1, 73, 727, 53071

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

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Representations

Binary: 1100111101001111

Octal: 147517

Duodecimal: 26867

Hexadecimal: cf4f

Square: 2816531041

Square Root: 230.3714392019983

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

O.g.f. A(x) satisfies: [xⁿ] 1/(1-x)^n² / exp( n·A(x) ) = 0 for n >= 1. A317342

Heptagonal numbers (A000566) that are semiprimes (A001358). A259676

a(n) = ∑_k=0..n Stirling2(n,k) * 2^binomial(k,2). A335390

E.g.f. A(x) satisfies: [xⁿ] 1/(1-x)^n² / A(x)ⁿ = 0 for n >= 1. A317341

Number of n X n invertible binary matrices A such that A⁵+I is invertible. A53071

Table read by antidiagonals: T(n,k) (n >= 3, k >= 1) is the number of vertices formed in a regular n-gon by straight line segments when connecting the n corner vertices to the points dividing the sides into k equal parts. A354544