Properties of the Number 55581

Fifty-Five Thousand Five Hundred Eighty-One

Basics

Value: 55580 → 55581 → 55582

Parity: odd

Prime: No

Previous Prime: 55579

Next Prime: 55589

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 97 × 191

Divisors: 1, 3, 97, 191, 291, 573, 18527, 55581

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100100011101

Octal: 154435

Duodecimal: 281B9

Hexadecimal: d91d

Square: 3089247561

Square Root: 235.75623003433017

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

Numbers k such that k² contains every digit at least once. A54038

Numbers n such that n² contains every decimal digit exactly once. A156977

Products of three distinct primes that form an arithmetic progression. A262723

a(n) = A002627(n+1) - A002627(n) - n!. A114870

Numbers k = p·q*r (p, q, r prime) congruent to 0 mod p+q+r. A160394

Odd squarefree composite numbers k, divisible by the sum of their prime factors, sopfr (A001414). A308643

Nonprimes n such that the sum of proper divisors of n and the product of proper divisors of n are both perfect cubes. A244429

Fifth column of triangle A055252. A55581

Number of (n+1)X(2+1) 0..3 arrays colored with the sets of distinct values in every 2X2 subblock. A236121

Number of (n+1)X(2+1) 0..3 arrays colored with the sets of distinct values in every 2X2 subblock, with new values 0..3 introduced row-major order. A236260