Properties of the Number 52421

Fifty-Two Thousand Four Hundred Twenty-One

Basics

Value: 52420 → 52421 → 52422

Parity: odd

Prime: No

Previous Prime: 52391

Next Prime: 52433

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 19 × 31 × 89

Divisors: 1, 19, 31, 89, 589, 1691, 2759, 52421

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100110011000101

Octal: 146305

Duodecimal: 26405

Hexadecimal: ccc5

Square: 2747961241

Square Root: 228.9563277133873

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 integer partitions of n that contain at least one even part and whose halved even parts are relatively prime. A366845

a(0) = 1; a(n) = a(n-1) + ∑_k=0..n-1 (1 + k) * binomial(k+1,2) * binomial(n-1,k) * a(k) * a(n-1-k). A386510

Quasi-Carmichael numbers to base 5: squarefree composites n such that (n,2·3) = 1 and prime p∣n ==> p-5∣n-5. A29558

a(n) = numerator of (1/n³)*(-1/(n+1) + 16/(n+2) + 3/(4*(2·n+1)) - 81/(4*(2·n+3))), term of a BBP-type series representation of ζ(3) by V. Adamchik and S. Wagon. A256323

Numbers without 8 as a digit. A52421