Properties of the Number 52191

Fifty-Two Thousand One Hundred Ninety-One

Basics

Value: 52190 → 52191 → 52192

Parity: odd

Prime: No

Previous Prime: 52189

Next Prime: 52201

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 1933

Divisors: 1, 3, 9, 27, 1933, 5799, 17397, 52191

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100101111011111

Octal: 145737

Duodecimal: 26253

Hexadecimal: cbdf

Square: 2723900481

Square Root: 228.4534963619511

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

Odd numbers k such that A173557(k) = A173557(σ(k)), where A173557(n) is multiplicative with a(p^e) = p-1 and σ is the sum of divisors function. A387159

Number of partitions of n into an even number of relatively prime parts. A339397

Fibonacci-Chebyshev sequence depending on rabbit sequence A005614. A176741

T(n,k)=Number of (n+2)X(k+2) 0..4 arrays with every consecutive three elements in every row and diagonal having exactly two distinct values, and in every column and antidiagonal not having exactly two distinct values, and new values 0 upwards introduced in row major order. A252961

O.g.f. A(x) satisfies: [xⁿ] exp(-n³*A(x)) / (1 - n²*x)ⁿ = 0, for n > 0. A320669

Smallest multiple of n with no isolated digits. A52191