Properties of the Number 51721

Fifty-One Thousand Seven Hundred Twenty-One

Basics

Value: 51720 → 51721 → 51722

Parity: odd

Prime: Yes

Previous Prime: 51719

Next Prime: 51749

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 51721

Divisors: 1, 51721

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1100101000001001

Octal: 145011

Duodecimal: 25B21

Hexadecimal: ca09

Square: 2675061841

Square Root: 227.42251427684113

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

Base-6 pandigital primes: primes having at least one of each digit 0,1,2,3,4,5 when written in base 6. A175278

Numbers·such that there exists n in N : (x+1)³ - x³ = 103·n². A147530

Nearest integer to log(nⁿ)^sqrt(n). A62456

Primes p such that 2·p⁴-+15 are also prime. A174366

Indices that give distinct values of A350090 in the order in which they appear. A350193

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

Numbers k such that 8·10^k + 87 is prime. A293397

Denominators of column 3 of table described in A051714/A051715. A51721

Numbers·such that (x + 103)³ - x³ is a square. A147528

Numbers n such that there exists·in N : (x+1)³ - x³ = 103·n². A147529