Properties of the Number 90821

Ninety Thousand Eight Hundred Twenty-One

Basics

Value: 90820 → 90821 → 90822

Parity: odd

Prime: Yes

Previous Prime: 90803

Next Prime: 90823

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 90821

Divisors: 1, 90821

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110001011000101

Octal: 261305

Duodecimal: 44685

Hexadecimal: 162c5

Square: 8248454041

Square Root: 301.3652269257354

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

Primes of the form 3·m² - 7. A201718

First of four consecutive primes p,q,r,s such that (2·p+q)/5 and (r+2·s)/5 are prime. A358149

Emirps with a single 2 as the only prime digit. A179033

Primes of the form 10n²+6n+1. A154409

Number of 1's in n-th term of A022482. A22484

Lesser of twin balanced primes (A090403). A96694

Number of length 6+6 0..n arrays with every seven consecutive terms having the maximum of some two terms equal to the minimum of the remaining five terms. A250160

Numbers that are products of two consecutive nonprimes. A90821