Properties of the Number 1

One

Basics

Value: 0 → 1 → 2

Parity: odd

Prime: No

Previous Prime:

Next Prime: 2

Digit Sum: 1

Digital Root: 1

Palindrome: Yes

Factorization:

Divisors: 1

Polygonal

Triangular: Yes

Square: Yes

Pentagonal: Yes

Hexagonal: Yes

Heptagonal: Yes

Tetrahedral: Yes

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1

Octal: 1

Duodecimal: 1

Hexadecimal: 1

Square: 1

Square Root: 1

Classification

Fibonacci: Yes

Bell Number: Yes

Factorial Number: No

Regular Number: Yes

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: Yes

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

No sequences found.