Properties of the Number 21795

Twenty-One Thousand Seven Hundred Ninety-Five

Basics

Value: 21794 → 21795 → 21796

Parity: odd

Prime: No

Previous Prime: 21787

Next Prime: 21799

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 1453

Divisors: 1, 3, 5, 15, 1453, 4359, 7265, 21795

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101010100100011

Octal: 52443

Duodecimal: 10743

Hexadecimal: 5523

Square: 475022025

Square Root: 147.6312974948063

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

Number of non-Fibonacci parts in all partitions of n. A144116

Matrix cube of triangle A113350. A113365

Number of ordered triples (w,x,y) with all terms in {1,...,n} and w²+x²+y²>=2n. A211645

Number of compositions of n with no consecutive 2's. A239791

a(1) = 50 and for any n > 0, a(n+1)² is the smallest square that begins with a(n). A309123

Decimal part of n^1/11 starts with a 'nine digits' anagram. A34286

Number of nX6 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one. A266079

The number of partitions of n which represent Chomp positions with Sprague-Grundy value 7. A284780

a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = 2^p+1 + 2 - n and p is the unique integer such that 2^p < n - 1 <= 2^p+1, starting with a(1) = 1, a(2) = 3, and a(3) = 2. A49969

n+p(n)+p(p(n)) is a palindrome, where p(n) denotes the n-th prime. A116037