Properties of the Number 57221

Fifty-Seven Thousand Two Hundred Twenty-One

Basics

Value: 57220 → 57221 → 57222

Parity: odd

Prime: Yes

Previous Prime: 57203

Next Prime: 57223

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 57221

Divisors: 1, 57221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111110000101

Octal: 157605

Duodecimal: 29145

Hexadecimal: df85

Square: 3274242841

Square Root: 239.2091135387613

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

Bases b where exactly eight primes p with p < b exist such that p is a base-b Wieferich prime. A325884

Primes of the form k² + k + 55661, with k >= 0. A116206

Lesser of twin self primes, i.e., smaller member of the pair of self primes differing by 2. A380713

Approximation of the 2-adic integer exp(-4) up to 2ⁿ. A321689

Primes of the form p²+100, where p is prime. A182476

Numbers k such that 2^k + 19 is prime. A57221