Properties of the Number -7526

Five Hundred Twenty-Six

Basics

Value: -7527 → -7526 → -7525

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 53 × 71

Divisors: 1, 2, 53, 71, 106, 142, 3763, 7526

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1110101100110

Octal: -16546

Duodecimal: -4432

Hexadecimal: -1d66

Square: 56640676

Square Root: 86.75252157718529

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

Write 1,2,... in a clockwise spiral; sequence gives numbers on positive·axis. A33951

Pentagonal numbers with odd index: a(n) = (2·n+1)*(3·n+1). A33570

T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 2 or 4 neighboring 1s. A297694

Number of plane regions after drawing (in general position) a convex n-gon and all its diagonals. A27927

a(n) = T(n,n-4), array T as in A055801. A55804

The 300-degree spoke (or ray) of a hexagonal spiral of Ulam. A244804

Even pentagonal numbers. A14633

Pentagonal numbers with prime indices. A116995

Pentagonal numbers > 0 which are not the difference of two larger pentagonal numbers. A136113

Least pentagonal number P(m) > P(n) such that P(m)+P(n) is again a pentagonal number, 0 if no such m exists. A136114