Properties of the Number 22321

Twenty-Two Thousand Three Hundred Twenty-One

Basics

Value: 22320 → 22321 → 22322

Parity: odd

Prime: No

Previous Prime: 22307

Next Prime: 22343

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 13 × 17 × 101

Divisors: 1, 13, 17, 101, 221, 1313, 1717, 22321

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101011100110001

Octal: 53461

Duodecimal: 10B01

Hexadecimal: 5731

Square: 498227041

Square Root: 149.40214188558343

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

Composite numbers n with the property that φ(n) divides (n-1)². A173703

E.g.f.: Limit_N->oo [ ∑_n>=0 (N + 3·n)^2·n * (x/N)ⁿ/n! ]^1/N. A266486

Numbers k for which rank of the elliptic curve y²=x³-k·x is 4. A309034

Deceptive nonprimes: composite numbers k that divide the repunit R_k-1. A864

13 times pentagonal numbers: a(n) = 13·n*(3·n-1)/2. A153793

Number of partitions of n with exactly nine sorts of part 1 which are introduced in ascending order. A320822

Centered icositetrachoral numbers. A365204

Pseudoprimes to base 60. A20188

a(n) = 2·n⁴ + 2·n³ + 3·n² + 2·n + 1. A58920

Numbers whose base-3 representation has exactly 10 runs. A43590