Properties of the Number 57006

Fifty-Seven Thousand Six

Basics

Value: 57005 → 57006 → 57007

Parity: even

Prime: No

Previous Prime: 56999

Next Prime: 57037

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 3167

Divisors: 1, 2, 3, 6, 9, 18, 3167, 6334, 9501, 19002

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111010101110

Octal: 157256

Duodecimal: 28BA6

Hexadecimal: deae

Square: 3249684036

Square Root: 238.75929301285845

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

Consider the figure made up of a row of n adjacent congruent rectangles, with diagonals of all possible rectangles drawn; a(n) = number of interior vertices where exactly two lines cross. A334701

First differences of A139334. A139335

Number of conjugacy classes of subgroups of index n in free group of rank 3. A57006

E.g.f.: Series_Reversion( x·cos(x) - x·sin(x) ). A215368

E.g.f. A(x) satisfies: A(x) = cos(x/A(x)) + sin(x/A(x)). A195135