Properties of the Number 66157

Sixty-Six Thousand One Hundred Fifty-Seven

Basics

Value: 66156 → 66157 → 66158

Parity: odd

Prime: No

Previous Prime: 66137

Next Prime: 66161

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 7 × 13 × 727

Divisors: 1, 7, 13, 91, 727, 5089, 9451, 66157

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001001101101

Octal: 201155

Duodecimal: 32351

Hexadecimal: 1026d

Square: 4376748649

Square Root: 257.2100309085942

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

Gaps of 5 in sequence A038593 (upper terms). A38650

Number of compositions (ordered partitions) of n into n parts, allowing zeros, with distinct nonzero parts. A97965

a(0) = 1, a(n) = 1 + 2·3 + 4·5 + 6·7 + ... + (2n)*(2n+1) for n > 0. A98931

Centered hexagonal numbers that are sphenic numbers. A382628

Largest number k such that k² divides A007781(6n+1). A127854

Numbers whose reciprocals have patterns of b repeating digits in their expansion in base b; leading non-repetitive digits are ignored. A66157