Properties of the Number 47185

Forty-Seven Thousand One Hundred Eighty-Five

Basics

Value: 47184 → 47185 → 47186

Parity: odd

Prime: No

Previous Prime: 47161

Next Prime: 47189

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 5 × 9437

Divisors: 1, 5, 9437, 47185

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1011100001010001

Octal: 134121

Duodecimal: 23381

Hexadecimal: b851

Square: 2226424225

Square Root: 217.22108553268947

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

Triangle read by rows giving the coefficients of formulas generating each variety of S1(n,k) (unsigned Stirling numbers of first kind). The p-th row (p>=1) contains T(i,p) for i=1 to 2·p, where T(i,p) satisfies ∑_i=1..2·p T(i,p) * C(n,i). A94216

Number of 12-regular partitions of n (no part is a multiple of 12). A328546

Matrix square, T(n,k), of Parker's partition triangle A047812, read by rows (n >= 1 and 0 <= k <= n-1). A128567

Column 1 of triangle A128567. A128568

Numbers k such that (79·10^k - 1)/3 is prime. A294938

Number of nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= (n-2)/2. A47185