Properties of the Number 57965

Fifty-Seven Thousand Nine Hundred Sixty-Five

Basics

Value: 57964 → 57965 → 57966

Parity: odd

Prime: No

Previous Prime: 57947

Next Prime: 57973

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 5 × 11593

Divisors: 1, 5, 11593, 57965

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110001001101101

Octal: 161155

Duodecimal: 29665

Hexadecimal: e26d

Square: 3359941225

Square Root: 240.75921581530375

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(n) = 5·a(n-1) - a(n-2), with a(0) = 2, a(1) = 5. A3501

Rectangular array A: first differences of row entries of array A294099, read by antidiagonals. A298675

Numbers n such that φ(n) is a Fibonacci number. A280592

Numerators of continued fraction convergents to sqrt(21). A41032

Array read by antidiagonals upwards: a(i,0) = 2, i >= 0; a(i,1) = i+2, i >= 0; a(i,j) = (i+2) * a(i,j-1) - a(i,j-2), for i >= 0, j > 1. A299741

A number triangle associated with the Chebyshev polynomials of the first kind. A101161

a(1)=a(2)=1. a(n+1) = a(n) + a(smallest prime dividing n). A128216

Array T(n,k) read by antidiagonals: T(n,k) = sum(i=0...n, (-1)ⁿ⁺ⁱ * C(n+i,2i) * n/(2i+1) * k²ⁱ⁺¹ ), n>0, k>1. A231123

Triangle, diagonals generated from Lucas polynomials. A118007

Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 19. A51984