Properties of the Number -15087

Fifteen Thousand Eighty-Seven

Basics

Value: -15088 → -15087 → -15086

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 47 × 107

Divisors: 1, 3, 47, 107, 141, 321, 5029, 15087

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101011101111

Octal: -35357

Duodecimal: -8893

Hexadecimal: -3aef

Square: 227617569

Square Root: 122.82914963476708

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

Consider the triangle in which the n-th row starts with n, contains n terms and the difference of successive terms is 1,2,3,... up to n-1. Sequence gives row sums. A81498

T(n,k) = number of (n+1) X (k+1) 0..2 arrays with every 2 X 3 or 3 X 2 subblock having an equal number of clockwise and counterclockwise edge increases. A206414

Triangle T(n, k) = (m*(n-k) + 1)*T(n-1, k-1) + (m*(k-1) + 1)*T(n-1, k) + j·T(n-2, k-1), where T(n, 1) = T(n, n) = 1, m = 2, and j = 2, read by rows. A144439

The number of vertices inside a cross with width 3 and height n (see Comments in A331455 for definition) formed by the straight line segments mutually connecting all vertices and all points. A330850

a(n) = Fibonacci(n) OR Fibonacci(n+1). A51123

Number of n-node rooted identity trees of height 6. A38090

Numerators of continued fraction convergents to sqrt(353). A41668

Integers n > 10563 such that the 'Reverse and Add!' trajectory of n joins the trajectory of 10563. A63064

Solve 2ⁿ - 2 = 7(x² - x) + (y² - y) for (x,y) with x>0, y>0; a(n) = value of y. A76631

Numbers n with property that n² is a concatenation of three 3-digit primes. A153139