Properties of the Number 86545

Eighty-Six Thousand Five Hundred Forty-Five

Basics

Value: 86544 → 86545 → 86546

Parity: odd

Prime: No

Previous Prime: 86539

Next Prime: 86561

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 × 19 × 911

Divisors: 1, 5, 19, 95, 911, 4555, 17309, 86545

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: 10101001000010001

Octal: 251021

Duodecimal: 42101

Hexadecimal: 15211

Square: 7490037025

Square Root: 294.1853157450249

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

Unique solution·of the congruence x² = -1 (mod m(n)), with m(n) = A002559(n) (Markoff numbers) in the interval [1, floor(m(n)/2)], assuming the Markoff uniqueness conjecture, for n >= 3. A324601

Smallest k such that n·k+1 is a prime and (n-1)/k is noncomposite, or 0 if no such number exists. A86545