Properties of the Number 56681

Fifty-Six Thousand Six Hundred Eighty-One

Basics

Value: 56680 → 56681 → 56682

Parity: odd

Prime: Yes

Previous Prime: 56671

Next Prime: 56687

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 56681

Divisors: 1, 56681

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1101110101101001

Octal: 156551

Duodecimal: 28975

Hexadecimal: dd69

Square: 3212735761

Square Root: 238.07771840304585

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

Positive numbers y such that y² is of the form x²+(x+79)² with integer x. A159758

Concatenation of prime p and nextprime(p) is prime -> cycles of 2 steps possible. A36339

Numbers k such that 40·R_k + 1 is prime, where R_k = 11...1 is the repunit (A002275) of length k. A56681

Numbers k such that (17·10^k + 43)/3 is prime. A294228