Properties of the Number 15250

Fifteen Thousand Two Hundred Fifty

Basics

Value: 15249 → 15250 → 15251

Parity: even

Prime: No

Previous Prime: 15241

Next Prime: 15259

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 ³ × 61

Divisors: 1, 2, 5, 10, 25, 50, 61, 122, 125, 250

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11101110010010

Octal: 35622

Duodecimal: 89AA

Hexadecimal: 3b92

Square: 232562500

Square Root: 123.4908903522847

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 n that are the hypotenuse of exactly 10 distinct integer-sided right triangles, i.e., n² can be written as a sum of two squares in 10 ways. A97225

4-dimensional analog of centered polygonal numbers. Also number of regions created by sides and diagonals of a convex n-gon in general position. A6522

Expansion of g.f. x*(-1-x-3·x²-x³+2·x⁵)/((2·x³+x²-1)*(x⁴+1)). A107851

Square array, read by antidiagonals, where row n+1 is generated from row n by first removing terms at positions [(m+3)²/4 - 2] for m>=0 and then taking partial sums, starting with all 1's in row 0. A135878

Numbers k such that k!/k#-1 is prime, where k# is the primorial function (A034386). A140293

a(n) = n⁴ + 5·n² + 4. A156798

Composite numbers k such that k!/k# - 1 is prime, where k# = primorial numbers A034386. A49421

Expansion of (1/x) * Series_Reversion( x*(1-x)/(1-x-x⁴) ). A366087

Number of base 4 circular n-digit numbers with adjacent digits differing by 1 or less. A124697

a(n) = ((sqrt(5) + 3)ⁿ + (-sqrt(5) -1)ⁿ + (-sqrt(5) + 3)ⁿ + (sqrt(5) - 1)ⁿ) / 2ⁿ. A215500