Properties of the Number 27475

Twenty-Seven Thousand Four Hundred Seventy-Five

Basics

Value: 27474 → 27475 → 27476

Parity: odd

Prime: No

Previous Prime: 27457

Next Prime: 27479

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 5 ² × 7 × 157

Divisors: 1, 5, 7, 25, 35, 157, 175, 785, 1099, 3925

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101101010011

Octal: 65523

Duodecimal: 13A97

Hexadecimal: 6b53

Square: 754875625

Square Root: 165.75584454250776

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

G.f. A(x) satisfies A(x) = 1 + x·A(x)⁴ / (1 - x·A(x)⁵). A364765

Numbers m such that m² = p² + k², with p > 0, where p = A007954(m) = the product of digits of m. A334542

Expansion of ∏_k>=1 (1-x^k)*(1+x^k)⁴. A261998

If mod[n,4]=0 then a(n)=a(n-1), if mod[n,4]=1 then a(n)=a(n-2)+a(n-3), if mod[n,4]=2 then a(n)=a(n-3)+a(n-4)+a(n-5), if mod[n,4]=2 then a(n)=a(n-4)+a(n-5)+a(n-6)+a[n-7]. A104205

Numbers k such that (178·10^k - 7)/9 is prime. A290955

a(n) = (n-1) * 15^n-2. A27475

G.f. A(x) satisfies: A( A(x)² - A(x)⁴ ) = x·A(x) + x·A(x)². A272819