Properties of the Number 7321

Seven Thousand Three Hundred Twenty-One

Basics

Value: 7320 → 7321 → 7322

Parity: odd

Prime: Yes

Previous Prime: 7309

Next Prime: 7331

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 7321

Divisors: 1, 7321

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1110010011001

Octal: 16231

Duodecimal: 42A1

Hexadecimal: 1c99

Square: 53597041

Square Root: 85.56284240252891

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 nodes in regular n-gon with all diagonals drawn. A7569

Primes whose base-3 representation also is the base-2 representation of a prime. A235265

Primes of the form j² + (j+1)². A27862

D-toothpick sequence of the third kind starting with a single toothpick. A220500

Expansion of 1/(1 - x³ - x⁴ + x⁷ - x¹⁰ - x¹¹ + x¹⁴) (a Salem polynomial). A143644

Balanced primes of order three. A82078

Primes of the form k² + k + 11. A48059

a(n) = 8·n² + 4·n + 1. A102083

Denominator of (1+σ(s)) / ((s+1)/2), where s is the square of n prime-shifted once (s = A003961(n)² = A003961(n²)). A337339

Largest prime factor of n⁴ + 1. A96172