Properties of the Number 80531

Eighty Thousand Five Hundred Thirty-One

Basics

Value: 80530 → 80531 → 80532

Parity: odd

Prime: No

Previous Prime: 80527

Next Prime: 80537

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 11 × 7321

Divisors: 1, 11, 7321, 80531

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 10011101010010011

Octal: 235223

Duodecimal: 3A72B

Hexadecimal: 13a93

Square: 6485241961

Square Root: 283.7798442454996

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) = (n/2)*(n⁴ + 1). A21003

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1)*b(n-2), where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4, and (a(n)) and (b(n)) are increasing complementary sequences. A295363

Regular triangle read by rows, T(n,k) is the number of derangements of [n] with exactly k right-to-left minima, for n >= 2 and 1 <= k <= n-1. A344437

Triangle read by rows: T(n,k) is the number of face-connected polyhedral components consisting of k cuboctahedra and n-k octahedra in the rectified cubic honeycomb up to translation, rotation, and reflection of the honeycomb, 0<=k<=n. A384782

The terms of A073211 (sums of two powers of 11) divided by 2. A73219

Number of nucleons in longest known radioactive decay series ending with Lead 208 ("thorium series"), reversed. A80531