Properties of the Number 65520

Sixty-Five Thousand Five Hundred Twenty

Basics

Value: 65519 → 65520 → 65521

Parity: even

Prime: No

Previous Prime: 65519

Next Prime: 65521

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ² × 5 × 7 × 13

Divisors: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111111111110000

Octal: 177760

Duodecimal: 31B00

Hexadecimal: fff0

Square: 4292870400

Square Root: 255.9687480924185

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

a(n) = 2ⁿ - n. A325

Product of first n nonzero Fibonacci numbers F(1), ..., F(n). A3266

Eisenstein series E₁₂(q) (alternate convention E₆(q)), multiplied by 691. A29828

a(n) = denominator of Bernoulli(2n)/(2n). A6953

Number of conjugacy classes in GL(n,16). A182607

Denominator of B_2n/(-4n), where B_m are the Bernoulli numbers. A6863

Number of rooted identity trees of height n. Sets of rank n. A38081

Numbers whose set of base 16 digits is {0,F}, where F base 16 = 15 base 10. A97262

Numbers missing from A102370. A102371

a(n) = n⁴ - n. A58895