Properties of the Number 75809

Seventy-Five Thousand Eight Hundred Nine

Basics

Value: 75808 → 75809 → 75810

Parity: odd

Prime: No

Previous Prime: 75797

Next Prime: 75821

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 41 × 43 ²

Divisors: 1, 41, 43, 1763, 1849, 75809

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010100000100001

Octal: 224041

Duodecimal: 37A55

Hexadecimal: 12821

Square: 5747004481

Square Root: 275.3343422096125

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

Numbers k such that k and k+1 are both divisible by the square of their largest prime factor. A354558

a(n) = n*(n+2)². A152619

a(1) = 0, a(2) = 0; for n > 2, a(n) - a(n-3) - a(n-5) - ... - a(n-p) = n if n is prime, otherwise = 0, where p = largest prime < n. A2123

Products p³ or p²*q, where {p,q} are consecutive primes. A33477

a(n) = (2·n-1)*(2·n+1)². A102094

a(n) = smallest number k with property that if the base-n expansion of k is reversed, the result is a nontrivial multiple of k. A224220

The smallest nonpalindromic number in base n that shares the same prime divisors as its digit reversal in base n. A371307

Palindromic even numbers with an odd number of distinct prime factors. A75809