Properties of the Number 51825

Fifty-One Thousand Eight Hundred Twenty-Five

Basics

Value: 51824 → 51825 → 51826

Parity: odd

Prime: No

Previous Prime: 51817

Next Prime: 51827

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 ² × 691

Divisors: 1, 3, 5, 15, 25, 75, 691, 2073, 3455, 10365

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1100101001110001

Octal: 145161

Duodecimal: 25BA9

Hexadecimal: ca71

Square: 2685830625

Square Root: 227.6510487566442

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

T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having directed index change 0,1 0,-2 1,0 or -1,0. A264299

Number of (3+1)X(n+1) arrays of permutations of 0..n·4+3 with each element having directed index change 0,1 0,-2 1,0 or -1,0. A264302

Number of (n+1)X(7+1) arrays of permutations of 0..n·8+7 with each element having directed index change 0,1 0,-2 1,0 or -1,0. A264306

Number of numbers below 10ⁿ with nonzero multiplicative digital root 5. A51825