Properties of the Number 15057

Fifteen Thousand Fifty-Seven

Basics

Value: 15056 → 15057 → 15058

Parity: odd

Prime: No

Previous Prime: 15053

Next Prime: 15061

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 239

Divisors: 1, 3, 7, 9, 21, 63, 239, 717, 1673, 2151

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11101011010001

Octal: 35321

Duodecimal: 8869

Hexadecimal: 3ad1

Square: 226713249

Square Root: 122.70696801730536

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

Numbers k such that k![4] + 2 is prime, where k![4] = A007662(k) = quadruple factorial. A283553

Minimal absolute value of determinant of a nonsingular n X n symmetric Toeplitz matrix using the first n prime numbers. A348891

Number of ways to represent n as a+b*(c+d*(e+f*(...x+y*(z)...))) in positive integers. A84978

Number of practical numbers not exceeding 2ⁿ. A209237

McKay-Thompson series of class 31A for Monster. A58628

Numbers k such that 64·k⁶ + 1091 is prime. A155809

Triangle of T(n,k) where T(n,k)/(n-1)! is probability of player k out of n players winning a game of "Elimination": rules are that player 1 chooses one of the others at random to be eliminated, then player 2 (or 3 if player 2 has been eliminated) chooses somebody else at random from the survivors to be eliminated next, then the next surviving player chooses and so on round the circle until all but one have been eliminated. A71818

Numerator of Euler(n, 2/25). A156966

Numbers n such that n·prime(n) is a pandigital number containing digits 0-9 exactly once. A272552

Number of genera of real quadratic field Q(sqrt(k)), k squarefree > 1. A317990