Properties of the Number 99821

Ninety-Nine Thousand Eight Hundred Twenty-One

Basics

Value: 99820 → 99821 → 99822

Parity: odd

Prime: No

Previous Prime: 99817

Next Prime: 99823

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 173 × 577

Divisors: 1, 173, 577, 99821

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11000010111101101

Octal: 302755

Duodecimal: 49925

Hexadecimal: 185ed

Square: 9964232041

Square Root: 315.94461539959815

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

Expansion of (1/x) * Series_Reversion( x * (1 - x)² * (1 - x / (1 - x)³) ). A389628

Numbers n such that 225·2ⁿ-1 is prime. A50864

Odd positive integers in base 2 (bisection of A007088). A99821