Properties of the Number 26221

Twenty-Six Thousand Two Hundred Twenty-One

Basics

Value: 26220 → 26221 → 26222

Parity: odd

Prime: No

Previous Prime: 26209

Next Prime: 26227

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 13 × 2017

Divisors: 1, 13, 2017, 26221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110011001101101

Octal: 63155

Duodecimal: 13211

Hexadecimal: 666d

Square: 687540841

Square Root: 161.92899678562824

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

Numbers k such that (k / sum of digits of k) and (k+1 / sum of digits of k+1) are both prime. A85775

Downward vertical of triangular spiral in A051682. A81272

Odd composite numbers n, such that n, n+d, n·d and n/d are all odious (A000069) for every divisor d of n. A231558

a(n) = abs(a(n-1) - 3·a(n-2)) with a(1)=a(2)=1. A192263

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 913", based on the 5-celled von Neumann neighborhood. A273768

Inverse Moebius transform of A000048 (starting at term 0). A54172

Irregular triangle T(n,k) read by rows: number of orbits of size 2^k on Dyck n-paths. A175137

Duplicate of A026214. A26221