Properties of the Number 581

Five Hundred Eighty-One

Basics

Value: 580 → 581 → 582

Parity: odd

Prime: No

Previous Prime: 577

Next Prime: 587

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 7 × 83

Divisors: 1, 7, 83, 581

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001000101

Octal: 1105

Duodecimal: 405

Hexadecimal: 245

Square: 337561

Square Root: 24.1039415863879

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 8·10^k - 49 is prime. A271269

Number of partitions of n into parts 3k and 3k+1 with at least one part of each type. A35618

Numbers k such that the k-th composition in standard order is a permutation (of an initial interval). A333218

Sums of three consecutive primes. A34961

Numbers that are the sum of 6 positive 4th powers. A3340

Expansion of 1/((1+x)*(1-x)⁵). A1752

Numbers n such that the number of squarefree numbers between prime(n) and prime(n+1) = prime(n+1)-prime(n)-1. A68361

Numbers whose sum of digits is 14. A235225

Tribonacci array: triangular array T read by rows: T(n,0)=1 for n >= 0, T(n,1) = T(n,2n) = 1 for n >= 1, T(n,2)=1 for n >= 2 and for n >= 3, T(n,k) = T(n-1,k-3) + T(n-1,k-2) + T(n-1,k-1) for 3 <= k <= 2n-1. A27023

Triangular matrix T, read by rows, where row n of T equals row (n-1) of Tⁿ⁺¹ with an appended '1'. A121412