Properties of the Number 75381

Seventy-Five Thousand Three Hundred Eighty-One

Basics

Value: 75380 → 75381 → 75382

Parity: odd

Prime: No

Previous Prime: 75377

Next Prime: 75389

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 25127

Divisors: 1, 3, 25127, 75381

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010011001110101

Octal: 223165

Duodecimal: 37759

Hexadecimal: 12675

Square: 5682295161

Square Root: 274.55600521569363

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

a(1) = 2, a(n+1) = a(n)-th squarefree number > 1. A71255

n written in fractional base 9/7. A24655

Numbers n such that 9·10ⁿ + 7·R_n - 4 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A103106

Number of n-bead necklaces labeled with numbers -4..4 not allowing reversal, with sum zero and first and second differences in -4..4. A209003

Fixed points of A075380. A75381