Properties of the Number 51816

Fifty-One Thousand Eight Hundred Sixteen

Basics

Value: 51815 → 51816 → 51817

Parity: even

Prime: No

Previous Prime: 51803

Next Prime: 51817

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 17 × 127

Divisors: 1, 2, 3, 4, 6, 8, 12, 17, 24, 34

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1100101001101000

Octal: 145150

Duodecimal: 25BA0

Hexadecimal: ca68

Square: 2684897856

Square Root: 227.63128080296872

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

Sum of the even singletons in all partitions of n (n>=0). A singleton in a partition is a part that occurs exactly once. A276425

a(n) = 1728·n - 24. A157287

Product of Pell and Motzkin numbers: a(n) = A000129(n+1)*A001006(n). A200540

Total volume of all rectangular prisms with dimensions r X s X t where r, s and t are the smallest, middle and largest parts in each partition of n into 3 parts. A307684

Consecutive internal states of the linear congruential pseudo-random number generator (321·s + 123) mod 10⁵ when started at 1. A383128

Numbers k such that k and k+2 are both unitary untouchable numbers (A063948). A357323

Numbers k such that (43·10^k - 403)/9 is prime. A285553

Number of n-digit numbers with nonzero multiplicative digital root 5. A51816