Properties of the Number 57281

Fifty-Seven Thousand Two Hundred Eighty-One

Basics

Value: 57280 → 57281 → 57282

Parity: odd

Prime: No

Previous Prime: 57271

Next Prime: 57283

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 7 ³ × 167

Divisors: 1, 7, 49, 167, 343, 1169, 8183, 57281

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111111000001

Octal: 157701

Duodecimal: 29195

Hexadecimal: dfc1

Square: 3281112961

Square Root: 239.3344939619026

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

Numerators of Cauchy numbers of first type. A6232

(-1)ⁿ⁺¹*A091137(n)*a(0,n), where a(i,j) = Integral_x=i..i+1 x*(x-1)*(x-2)*...*(x-j+1)/j! dx. A141417

a(n) = 1·2*3·4 + 5·6*7·8 + 9·10·11·12 + 13·14·15·16 + 17·18·19·20 + ... + (up to n). A319205

Numerators of upper right triangle of a(i,j) = Integral_x=i..i+1 ∑_k=0..j A048994(j,k)*x^k. A140825

T(n,k)=Number of nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 2,0,3,1,4 for x=0,1,2,3,4. A196287

a(n) = smallest index i such that A010062(i) >= 2ⁿ. A229167

G.f. A(x) satisfies A(A(A(..(A(x))..))) = B(x) (7th self-COMPOSE of A) such that the coefficients of B(x) consist only of numbers {1,2,3,..,7}, with B(0) = 0. A112115

Triangle read by rows. Row n gives the numerators of the coefficients of the Bernoulli polynomials of the second kind (in rising powers). A290317

Number of nX4 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 2,0,3,1,4 for x=0,1,2,3,4. A196283

Triangle read by rows: numerators of degenerate Bernoulli numbers written as powers of λ. A209123