Properties of the Number 51206

Fifty-One Thousand Two Hundred Six

Basics

Value: 51205 → 51206 → 51207

Parity: even

Prime: No

Previous Prime: 51203

Next Prime: 51217

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 × 25603

Divisors: 1, 2, 25603, 51206

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1100100000000110

Octal: 144006

Duodecimal: 25772

Hexadecimal: c806

Square: 2622054436

Square Root: 226.28742784343984

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

Number of 3-covers of an unlabeled n-set. A5783

a(n) = n*(n + 5)*(n + 7)*(n + 10)/24 + 1. A323220

Numbers k such that 163·2^k+1 is prime. A32458

G.f. A(x) satisfies A(x) = 1+x²/(1-x)*A(x²/(1-x)). A201196

Numbers of the form x²-4^y >= 0. A51206

Array read by antidiagonals upwards: A(n, k) = if(n mod 2 = 0, floor((n+2^k-2) / 2^k), n * (k·2^k+1) + 1). A391114