Properties of the Number 75573

Seventy-Five Thousand Five Hundred Seventy-Three

Basics

Value: 75572 → 75573 → 75574

Parity: odd

Prime: No

Previous Prime: 75571

Next Prime: 75577

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁵ × 311

Divisors: 1, 3, 9, 27, 81, 243, 311, 933, 2799, 8397

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10010011100110101

Octal: 223465

Duodecimal: 37899

Hexadecimal: 12735

Square: 5711278329

Square Root: 274.9054382874227

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

Number of compositions of n into 9 ordered relatively prime parts. A23034

Spiral sieve using Fibonacci numbers. A5621

Number of (n+3) X 7 binary arrays with every 4 X 4 subblock commuting with each horizontal and vertical neighbor 4 X 4 subblock. A188100

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Fibonacci numbers), t = (composite numbers). A24461

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Fibonacci numbers), t = (composite numbers). A25081

Numbers n such that n | 8ⁿ + 6ⁿ + 4ⁿ + 2ⁿ + 1. A57840

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 1), (0, -1, 1), (0, 1, -1), (1, 0, 1)}. A148856

a(1)=1; a(n) is the smallest positive number not occurring earlier, with different parity from a(n-1), such that sum of any subsequence of two or more consecutive terms is composite. A75573

a(1) = 1; a(n+1) = a(n) +- (sum of digits of a(1) up to a(n)), with "+" when a(n) is odd, or "-" if even. A332058