Properties of the Number 65481

Sixty-Five Thousand Four Hundred Eighty-One

Basics

Value: 65480 → 65481 → 65482

Parity: odd

Prime: No

Previous Prime: 65479

Next Prime: 65497

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 13 × 23 × 73

Divisors: 1, 3, 13, 23, 39, 69, 73, 219, 299, 897

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 1111111111001001

Octal: 177711

Duodecimal: 31A89

Hexadecimal: ffc9

Square: 4287761361

Square Root: 255.8925555775314

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

Array read by antidiagonals: T(n,k) is the number of non-isomorphic n X n nonnegative integer matrices with all row and column sums equal to k up to permutations of rows and columns. A333733

Number of n X 2 0..1 arrays with every element equal to 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero. A297972

a(n) = 2·n³ - 2·n + 9. A127989

Number of partitions p of n such that (number of numbers in p of form 3k+1) > (number of numbers in p of form 3k+2). A241739

Expansion of (78+1116·x+3492·x²+3237·x³+927·x⁴+72·x⁵+x⁶)/(1-x)⁷. A160839

Number of non-isomorphic n X n nonnegative integer matrices with all row and column sums equal to 5 up to permutations of rows and columns. A333736

Decimal expansion of ∏_{p prime} (1 - 1/(p²-2)). A65481