Properties of the Number 27161

Twenty-Seven Thousand One Hundred Sixty-One

Basics

Value: 27160 → 27161 → 27162

Parity: odd

Prime: No

Previous Prime: 27143

Next Prime: 27179

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 157 × 173

Divisors: 1, 157, 173, 27161

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110101000011001

Octal: 65031

Duodecimal: 13875

Hexadecimal: 6a19

Square: 737719921

Square Root: 164.80594649465777

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: T(n,k) = number of noncommutative symmetric polynomials of degree n that have exactly k different variables appearing in each monomial and which generate the algebra of all noncommutative symmetric polynomials (n >= 1, 1 <= k <= n). A55105

Triangle T(k,n) giving number of symmetric polynomials of degree n in k noncommuting variables, n >=2, 2 <= k <= n. A55107

Triangle T(n,k) giving number of symmetric polynomials of degree n in k noncommuting variables, n >=2, 2 <= k <= n. A55106

a(n) = prime(n)*prime(n+3). A90090

Sequence of pairwise relatively prime numbers of class P₆ (see comment in A275246). A275251

a(n) = ∑_k=0..n (-1)^n-k*floor(sqrt(Bell(k))). A192572

Semiprimes (A001358) whose digit reversal is a pentagonal number (A000326). A115708

Brilliant numbers (A078972) whose digit reversal is a pentagonal number (A000326). A115679

a(n) = n!*(4·n³ - 30·n² + 40·n + 3)/24. A34863

T(2n-1,n-1), T given by A027157. A27161