Properties of the Number 55621

Fifty-Five Thousand Six Hundred Twenty-One

Basics

Value: 55620 → 55621 → 55622

Parity: odd

Prime: Yes

Previous Prime: 55619

Next Prime: 55631

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 55621

Divisors: 1, 55621

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100101000101

Octal: 154505

Duodecimal: 28231

Hexadecimal: d945

Square: 3093695641

Square Root: 235.84104816592043

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

E.g.f.: ∑_n>=0 exp(n·x) * ∏_k=1..n (exp(k·x) - 1). A207214

Primes p such that there exist primes p'<p"<p"'<p""<p such that the concatenation of any two among the {p,...,p""} is prime. A139005

Number of covers of an unlabeled n-set. A55621