Properties of the Number 51239

Fifty-One Thousand Two Hundred Thirty-Nine

Basics

Value: 51238 → 51239 → 51240

Parity: odd

Prime: Yes

Previous Prime: 51229

Next Prime: 51241

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 51239

Divisors: 1, 51239

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1100100000100111

Octal: 144047

Duodecimal: 2579B

Hexadecimal: c827

Square: 2625435121

Square Root: 226.36033221392833

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

Primes with 23 as smallest positive primitive root. A61335

Number of (w,x,y,z) with all terms in {1,...,n} and 2w·x<=3·y*z. A211921

Primes p such that p+2, p*(p+2)+18 and p*(p+2)+20 are also prime. A130737

a(0) = 1, a(n) = 1 + 2·3 + 4·5 + 6·7 + ... + (2n)*(2n+1) for n > 0. A98931

Primes of the form p² + q² + 21, where p and q are consecutive primes. A229075

Smallest prime that is the (sum, k·prime(k),k=m,..n+m-1) for some m, or 0 if no such m exists. A268467

Primes of the form A132583(k)*42 - 43. A298699

Number of ways to arrange integers 1 through n so that the sum of each adjacent pair is prime, not counting reversals. A51239