Properties of the Number 72541

Seventy-Two Thousand Five Hundred Forty-One

Basics

Value: 72540 → 72541 → 72542

Parity: odd

Prime: No

Previous Prime: 72533

Next Prime: 72547

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 7 × 43 × 241

Divisors: 1, 7, 43, 241, 301, 1687, 10363, 72541

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10001101101011101

Octal: 215535

Duodecimal: 35B91

Hexadecimal: 11b5d

Square: 5262196681

Square Root: 269.334364684494

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

T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s. A297314

Numbers k such that σ(k+1) = 2*φ(k). A67260

a(n) = 3·n⁴ + 6·n³ - 3·n + 1. A181475

Number of nX7 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s. A297313

Number of 3Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s. A297316

Centered hexagonal numbers that are sphenic numbers. A382628

List of pairs of numbers (k, k+4), where k-1 and k+3 are primes. A72541