Properties of the Number 47500

Forty-Seven Thousand Five Hundred

Basics

Value: 47499 → 47500 → 47501

Parity: even

Prime: No

Previous Prime: 47497

Next Prime: 47501

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 ⁴ × 19

Divisors: 1, 2, 4, 5, 10, 19, 20, 25, 38, 50

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011100110001100

Octal: 134614

Duodecimal: 235A4

Hexadecimal: b98c

Square: 2256250000

Square Root: 217.94494717703367

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

Scaled Chebyshev U-polynomial evaluated at sqrt(5)/2. A30191

Binomial transform of Fibonacci(2n). A93131

Matrix square of triangle A136220, read by rows. A136225

a(n) = ∑_{k >= 0}(-1)^k*binomial(n,5·k+1). A289321

a(n) = ∑_k>=0 (-1)^k*binomial(n,5·k+3). A289388

a(n) = ∑_k>=0 (-1)^k*binomial(n, 5·k+2). A289387

Square array T(n,k) of second binomial transforms of generalized Fibonacci numbers, read by ascending antidiagonals, with n, k >= 0. A83861

Alternating sum of the Fibonacci numbers multiplied by their (combinatorial) indices. A120940

Triangle, T(n, k) = (sqrt(k+1))^n-1*ChebyshevU(n-1, sqrt(k+1)/2), read by rows. A167925

Least positive integer k such that both k and k·n belong to the set {m>0: m+1, m²+1 and m²+prime(m)² are all prime}. A261339