Properties of the Number 61221

Sixty-One Thousand Two Hundred Twenty-One

Basics

Value: 61220 → 61221 → 61222

Parity: odd

Prime: No

Previous Prime: 61211

Next Prime: 61223

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 20407

Divisors: 1, 3, 20407, 61221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110111100100101

Octal: 167445

Duodecimal: 2B519

Hexadecimal: ef25

Square: 3748010841

Square Root: 247.42877763105892

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 superdiagonal partitions: partitions (p1, p2, p3, ...) of n such that π >= i. A238873

Expansion of e.g.f. sinh(log(1+x)/cosh(x)). A9583

Number of nX3 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements. A282964

Number of tic-tac-toe games won after n plays. A61221