Number 261

It has 6 divisors and a digital root of 9. Explore its full properties below, or find words and phrases with a gematria value of 261.

261

Divisors: 6

1, 3, 9, 29, 87, 261

Sum: 390

Mathematical Properties

Golden Numbern/a

Reduced Digit Sum9

Magic Constant8,889,921

Digital Root9

Octal177(405)

Duodecimal361(199)

Hexadecimal609(105)

Binary100000101

261st Values

Prime1,663

Triangular34,191

Square68,121

Star407,161

Pentagonal102,051

Cube17,779,581

Tetrahedral2,997,411

Square Pyramidal5,960,631

Fibonaccin/a

Harshad1,168

Happy Number1,812