Properties of the Number 81149

Eighty-One Thousand One Hundred Forty-Nine

Basics

Value: 81148 → 81149 → 81150

Parity: odd

Prime: No

Previous Prime: 81131

Next Prime: 81157

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 19 × 4271

Divisors: 1, 19, 4271, 81149

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110011111101

Octal: 236375

Duodecimal: 3AB65

Hexadecimal: 13cfd

Square: 6585160201

Square Root: 284.8666354629829

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

Values of m in the discriminant D = -4·m leading to a new maximum of the L-function of the Dirichlet series L(1) = ∑_k=1..oo Kronecker(D,k)/k. A3420

Numerator of the average of the averages of all integer partitions of n. A319335

Number of nX5 0..1 arrays with every element equal to 0, 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero. A298491

Addends k > 0 such that x² + k produces a new minimum of its Hardy-Littlewood Constant. A331949

Number of odd cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506. A81149