Properties of the Number 61489

Sixty-One Thousand Four Hundred Eighty-Nine

Basics

Value: 61488 → 61489 → 61490

Parity: odd

Prime: No

Previous Prime: 61487

Next Prime: 61493

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 17 × 3617

Divisors: 1, 17, 3617, 61489

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111000000110001

Octal: 170061

Duodecimal: 2B701

Hexadecimal: f031

Square: 3780897121

Square Root: 247.9697562203907

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 e.g.f. exp(x/(1 - x³)^1/3). A373517

G.f.: ∏_k>0 (1+x^k)/((1-x^k)*(1+x^3k)*(1+x^5k)). A100823

Number of words w of length n such that each letter of the binary alphabet is used at least once and for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z. A321838

Numbers that are Fibonacci numbers plus or minus 1. A61489

Number of (n+2)X(1+2) 0..2 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order. A252877

Numbers k such that k + 6^t is semiprime for t = 0 to 9. A330508