Properties of the Number 51018

Fifty-One Thousand Eighteen

Basics

Value: 51017 → 51018 → 51019

Parity: even

Prime: No

Previous Prime: 51001

Next Prime: 51031

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 11 × 773

Divisors: 1, 2, 3, 6, 11, 22, 33, 66, 773, 1546

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1100011101001010

Octal: 143512

Duodecimal: 25636

Hexadecimal: c74a

Square: 2602836324

Square Root: 225.87164496678196

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 perfect-power divisors of n!. A336416

Irregular triangle read by rows: T(n,k) is the number of inequivalent connected induced k-vertex subgraphs of the hypercube graph of dimension n >= 0, 1 <= k <= 2ⁿ. A369605

Number of nondecreasing arrangements of n+3 numbers in 0..5 with each number being the sum mod 6 of three others. A183900

Decimal expansion of the ratio of the length of the latus rectum arc of any parabola to its semi latus rectum: sqrt(2) + log(1 + sqrt(2)). A103710

Numbers that are 2-persistent but not 3-persistent. A51018

Decimal expansion of the ratio of the length of the latus rectum arc of any parabola to its latus rectum: (sqrt(2) + log(1 + sqrt(2)))/2. A103711

Decimal expansion of the ratio of the length of the boundary of any parbelos to the length of the boundary of its associated arbelos: (sqrt(2) + log(1 + sqrt(2))) / π. A232716

Decimal expansion of the ratio of the length of the boundary of any arbelos to the length of the boundary of its associated parbelos: π / (sqrt(2) + log(1 + sqrt(2))). A232717

θ series of 16-dimensional lattice OBW16, an overlattice of the Barnes-Wall lattice BW16. A239917