Properties of the Number 51261

Fifty-One Thousand Two Hundred Sixty-One

Basics

Value: 51260 → 51261 → 51262

Parity: odd

Prime: No

Previous Prime: 51257

Next Prime: 51263

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 2441

Divisors: 1, 3, 7, 21, 2441, 7323, 17087, 51261

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100100000111101

Octal: 144075

Duodecimal: 257B9

Hexadecimal: c83d

Square: 2627690121

Square Root: 226.40892208568107

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

Expansion of (1-x⁷)/(1-x)⁷. A8489

Tetrahedral numbers written backwards. A4161

Number of binary strings of length n with no substrings equal to 0000, 0101, or 1111. A164437

Number of integers k not exceeding 2ⁿ such that the cube of number of divisors [A000005(k)] is larger than k. A56764

Number of 4-sided regions in the Farey Diagram Farey(n,n), divided by 8. A358303

Cube of number of divisors is larger than the number. A56757

Rectangular table, read by antidiagonals, such that the g.f. of row n, R_n(y), satisfies: R_n(y) = ∑_k>=0 y^k * R_k(y)^n·k for n>=0, with R₀(y) = 1/(1-y). A124530

Main diagonal of A018219, i.e., (n, n, a_n) is a winning position. A51261