Properties of the Number 56791

Fifty-Six Thousand Seven Hundred Ninety-One

Basics

Value: 56790 → 56791 → 56792

Parity: odd

Prime: No

Previous Prime: 56783

Next Prime: 56807

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 7 ² × 19 × 61

Divisors: 1, 7, 19, 49, 61, 133, 427, 931, 1159, 2989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101110111010111

Octal: 156727

Duodecimal: 28A47

Hexadecimal: ddd7

Square: 3225217681

Square Root: 238.30862342768881

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

Centered cube numbers: n³ + (n+1)³. A5898

Numbers n such that n through n+7 are divisible by the same number of distinct primes. A45936

Numbers n such that φ(n) = 3*φ(n-1). A266268

Strong pseudoprimes to base 48. A20274

Strong pseudoprimes to base 97. A20323

Nearest integer to the n-th root of e leading to a generalized closed form for ζ(s). A108925

a(n) = 16·n³ - 36·n² + 30·n - 9. A341043

Weight of binary expansion of n + length of binary expansion of n. A56791

The sequence lists the least prime numbers, in ascending order, such that each of them can be written, in a unique way, in the form x² + h·y², where x, y are natural numbers, while h takes all the values of the sequences A000926 (Idoneal numbers) and A003173 (Heegner numbers). See example. A340133