Properties of the Number 21611

Twenty-One Thousand Six Hundred Eleven

Basics

Value: 21610 → 21611 → 21612

Parity: odd

Prime: Yes

Previous Prime: 21601

Next Prime: 21613

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 21611

Divisors: 1, 21611

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101010001101011

Octal: 52153

Duodecimal: 1060B

Hexadecimal: 546b

Square: 467035321

Square Root: 147.0068025636909

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 k² + 2. A56899

Number of integer partitions of n having a unique part of least multiplicity. A362610

Primes with digital product = 12. A107697

Primes of the form 2·n² + 74·n + 35. A217500

Primes having only {1, 2, 6} as digits. A385774

Lesser of twin primes of the form (k² + 2, k² + 4). A253639

Sum of composite numbers between prime p and nextprime(p) is palindromic. A54266

A monotonic doubly-fractal sequence. Erase the last (rightmost) digit of every integer: what is left is the sequence itself. The erased digits, one by one, form also the sequence itself. A127204

Primes of the form m^k+k, with m and k > 1. A99227

Primes that are equal to the mean of 5 consecutive squares. A129388