Properties of the Number 57239

Fifty-Seven Thousand Two Hundred Thirty-Nine

Basics

Value: 57238 → 57239 → 57240

Parity: odd

Prime: No

Previous Prime: 57223

Next Prime: 57241

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 7 × 13 × 17 × 37

Divisors: 1, 7, 13, 17, 37, 91, 119, 221, 259, 481

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1101111110010111

Octal: 157627

Duodecimal: 2915B

Hexadecimal: df97

Square: 3276303121

Square Root: 239.24673456496748

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

Numbers k such that 2^k+1 == 1 (mod k). A187787

Number T(n,k) of entries in the k-th last blocks of all set partitions of [n]; triangle T(n,k), n>=1, 1<=k<=n, read by rows. A286416

Numbers k such that ω(k) = 4 and the largest prime factor of k equals the sum of its remaining distinct prime factors, where ω(k) = A001221(k). A383728

Expansion of e.g.f. x·exp(4·x)*cosh(x). A82135

Numbers k such that k + sum of its prime factors = (k+1) + sum of its prime factors. A20700

Numbers n such that (i) the sum of the distinct primes dividing n is divisible by the largest prime dividing n and (ii) n has exactly 4 distinct prime factors and (iii) n is squarefree. A71143

(Terms in A028286)/2. A51359

Coefficients in expansion of E₂/∏_k>=1 (1-q^k)². A289350

Numbers n such that n | 12ⁿ + 11ⁿ + 10ⁿ + 9ⁿ. A57239