Properties of the Number 75215

Seventy-Five Thousand Two Hundred Fifteen

Basics

Value: 75214 → 75215 → 75216

Parity: odd

Prime: No

Previous Prime: 75211

Next Prime: 75217

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 7 ² × 307

Divisors: 1, 5, 7, 35, 49, 245, 307, 1535, 2149, 10745

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010010111001111

Octal: 222717

Duodecimal: 3763B

Hexadecimal: 125cf

Square: 5657296225

Square Root: 274.25353233823625

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

Let p = n-th prime == 3 mod 8; a(n) = (sum of quadratic residues mod p that are < p/2) + (sum of all quadratic residues mod p). A282727

Numbers of the form 49·k, where 49·k+2 and 49·k-6 are both prime. A153779

Number of anisohedral polyhexes with n cells. A75215