Properties of the Number 27471

Twenty-Seven Thousand Four Hundred Seventy-One

Basics

Value: 27470 → 27471 → 27472

Parity: odd

Prime: No

Previous Prime: 27457

Next Prime: 27479

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 9157

Divisors: 1, 3, 9157, 27471

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101101001111

Octal: 65517

Duodecimal: 13A93

Hexadecimal: 6b4f

Square: 754655841

Square Root: 165.743778163767

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) = 1 + ∑_i=1..n (p_i - 2)*(p_i#/p_i), where p_i stands for the i-th prime, and p_i# = A002110(i), the i-th primorial number. A392860

Numbers k such that 2^k + 2·k - 3 is prime. A392535

Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 10101-11111 pattern in any orientation. A147427

Exponents k for which reversal(2^k-1) is prime. A309607

a(n) = (n-1)*3^n-2, n > 0. A27471