Properties of the Number 51824

Fifty-One Thousand Eight Hundred Twenty-Four

Basics

Value: 51823 → 51824 → 51825

Parity: even

Prime: No

Previous Prime: 51817

Next Prime: 51827

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁴ × 41 × 79

Divisors: 1, 2, 4, 8, 16, 41, 79, 82, 158, 164

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100101001110000

Octal: 145160

Duodecimal: 25BA8

Hexadecimal: ca70

Square: 2685726976

Square Root: 227.64885240211512

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

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, -1), (0, 1, 1), (1, -1, -1), (1, 0, 0)}. A149997

Pell numbers: a(0) = 0, a(1) = 1; for n > 1, a(n) = 2·a(n-1) + a(n-2). A129

Jacobsthal sequence (or Jacobsthal numbers): a(n) = a(n-1) + 2·a(n-2), with a(0) = 0, a(1) = 1; also a(n) = nearest integer to 2ⁿ/3. A1045

Companion Pell numbers: a(n) = 2·a(n-1) + a(n-2), a(0) = a(1) = 2. A2203

Jacobsthal-Lucas numbers. A14551

Number of permutations of [1..n] which are indecomposable by direct and skew sums. A359856

Number of numbers below 10ⁿ with nonzero multiplicative digital root 4. A51824