Properties of the Number 45444

Forty-Five Thousand Four Hundred Forty-Four

Basics

Value: 45443 → 45444 → 45445

Parity: even

Prime: No

Previous Prime: 45439

Next Prime: 45481

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 7 × 541

Divisors: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1011000110000100

Octal: 130604

Duodecimal: 22370

Hexadecimal: b184

Square: 2065157136

Square Root: 213.17598363793235

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 which have only digits 4 and 5 in base 10. A256290

Expansion of g.f.: 1/((1 - 2·x² + x⁴ + 2·x⁶ - x⁸)*(1 - 2·x² - x⁴ + 2·x⁶ - x⁸)). A147607

Numbers k for which σ(k - x) + σ(k + x) = 8·k has at least one nonnegative solution. A384841

Number of grains of sand required to be added to one cell at the origin in an initially empty and infinite 3D cubic grid for the 3D sandpile model such that the distance from the origin of the furthest nonempty cell along the axes is n. A351783

Irregular triangle read by rows: T(n,k), n>=1, k>=1, in which column k lists the numbers of A353689 multiplied by A000330(k), and the first element of column k is in row A000217(k). A353690

Number of collinear triples in a 4 X n rectangular grid. A334706

Sums of antidiagonals of A099233. A99236

Smallest sequence which lists the position of digits "4" in the sequence. A167454

Denominators of the sequence s(n) of the sum resp. product of fractions f(n) defined recursively by f(1) = 5/1; f(n+1) is chosen so that the sum and the product of the first n terms of the sequence are equal. A225164

Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum not 1 3 6 or 8 and every diagonal and antidiagonal sum 1 3 6 or 8. A252049