Properties of the Number 55781

Fifty-Five Thousand Seven Hundred Eighty-One

Basics

Value: 55780 → 55781 → 55782

Parity: odd

Prime: No

Previous Prime: 55763

Next Prime: 55787

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 11 ² × 461

Divisors: 1, 11, 121, 461, 5071, 55781

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100111100101

Octal: 154745

Duodecimal: 28345

Hexadecimal: d9e5

Square: 3111519961

Square Root: 236.18001608942276

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

Expansion of 1/((1-6x)(1-7x)(1-10x)). A20572

Positive integers m such that π(m³) = π(j³) + π(k³) for some 0 < j <= k < m. A262409

Primes q of the form q = 10p + 1, where p is also prime. A55781