Properties of the Number 17445

Seventeen Thousand Four Hundred Forty-Five

Basics

Value: 17444 → 17445 → 17446

Parity: odd

Prime: No

Previous Prime: 17443

Next Prime: 17449

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 1163

Divisors: 1, 3, 5, 15, 1163, 3489, 5815, 17445

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100010000100101

Octal: 42045

Duodecimal: A119

Hexadecimal: 4425

Square: 304328025

Square Root: 132.07952150125317

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

a(n) = ((2·n)!/(n!*2^n-1))*Integral_x=1/2..1 (sqrt(1-x²)/x)^2·n dx. A95839

Duplicate of A095839. A234290

Sum of the middle parts in the partitions of 4n-1 into 3 parts. A240707

a(n) is the number of binary strings of length n whose shortest run of 1s is of length 3. A384155

Expansion of 1/(1-x⁴-x⁵-x⁶-x⁷-x⁸-x⁹-x¹⁰-x¹¹-x¹²). A17834

Numbers k such that the k-th composition in standard order is a non-alternating permutation of an initial interval of positive integers. A350250

Number of permutations of length n which avoid the patterns 1234, 3421, 4312. A116756

a(n) = (11·n + 4)⁹. A17445

a(n) = n for n <= 3; for n > 3, a(n) is the least novel multiple of k, the product of all distinct prime factors of a(n-2) that do not divide a(n-1). A362855

Number of (n+2)X(1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 4 5 or 7. A251993