Properties of the Number 57816

Fifty-Seven Thousand Eight Hundred Sixteen

Basics

Value: 57815 → 57816 → 57817

Parity: even

Prime: No

Previous Prime: 57809

Next Prime: 57829

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ² × 11 × 73

Divisors: 1, 2, 3, 4, 6, 8, 9, 11, 12, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110000111011000

Octal: 160730

Duodecimal: 29560

Hexadecimal: e1d8

Square: 3342689856

Square Root: 240.44957891416652

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

Coefficient of x⁴ in expansion of (1+x+x²)ⁿ. A5712

Sum of the principal diagonals of a 2n X 2n square spiral. A137931

Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having exactly k UUU's (triple rises) where U=(1,1). Rows have 1,1,1,2,3,4,5,... entries, respectively. A92107

a(n) = 6·n*(9·n-5). A277984

a(n) = Trinomial(2·n+1, 4) = (1/6)*n*(2·n + 1)*(2·n² + 9·n + 1), n >= 0. A302709

Numbers k such that k and k + 1 have the same norm of the sum of unitary divisors in Gaussian integers (A332474). A332475

TrueSoFar number of terms in other bases. A102844

If a(n) = 0 mod 3 then a(n+1)=a(n)/3 otherwise a(n+1)=4·a(n)+-1 where sign is chosen to give a multiple of 3. A57816