Properties of the Number -223517

Two Hundred Twenty-Three Thousand Five Hundred Seventeen

Basics

Value: -223518 → -223517 → -223516

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 7 × 37 × 863

Divisors: 1, 7, 37, 259, 863, 6041, 31931, 223517

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110110100100011101

Octal: -664435

Duodecimal: -A9425

Hexadecimal: -3691d

Square: 49959849289

Square Root: 472.77584540667897

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

Take n points in general position in the plane; draw all the (infinite) straight lines joining them; sequence gives number of connected regions formed. A55503

a(n) = ∑_{k=0..floor(n/6)} (7·k+1) * binomial(2·n-5·k+1,n-6·k)/(2·n-5·k+1). A390481