Properties of the Number 45800

Forty-Five Thousand Eight Hundred

Basics

Value: 45799 → 45800 → 45801

Parity: even

Prime: No

Previous Prime: 45779

Next Prime: 45817

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 5 ² × 229

Divisors: 1, 2, 4, 5, 8, 10, 20, 25, 40, 50

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1011001011101000

Octal: 131350

Duodecimal: 22608

Hexadecimal: b2e8

Square: 2097640000

Square Root: 214.00934559032697

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

Take n points in general position in the plane; draw all the (infinite) straight lines joining them; sequence gives number of connected regions formed. A55503

G.f.: 1 = 1/(1+x) + ∑_n>=1 a(n)*C(2n,n-1)*xⁿ* ∑_k>=0 C(2n+k,k)²*(-x)^k. A181168

The Wiener index of the comb-shaped graph |_|_|...|_| with 2n (n>=1) nodes. The Wiener index of a connected graph is the sum of the distances between all unordered pairs of vertices in the graph. A192023

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2)², where a(0) = 2, a(1) = 3, b(0) = 1, and (a(n)) and (b(n)) are increasing complementary sequences. A296259

0-ish numbers (end in 01, 07, 43, 49). A45800

G.f.: 1 = ∑_n>=0 a(n)*xⁿ* ∑_k>=0 C(2n+k,k)²*(-x)^k. A181167