Number 1251 - properties and curiosities

1251 (number)

1251

Number 1251 properties

  • Happy
  • Harshad
  • 1251 is an odd number.
  • 1251 is a Harshad number, which means it is divisible by the sum of its digits (1251 = 9, and 1251 is divisible by 9).

Prime factorization

Prime factorization of 1251: 3^2 × 139.

Divisors

Divisor count: 6

1, 3, 9, 139, 417, 1251

Factors of 1251 are: 1, 3, 9, 139, 417, 1251.

Representations

In octal, 1251 is represented as 2343.

In binary, 1251 is represented as 10011100011.

In hex, 1251 is represented as 4E3.

Roman numeral: MCCLI

Curiosities

  • 1251 is divisible by the sum of its digits.

Quick answers

Is 1251 prime?
No, 1251 is not prime.

What are the factors of 1251?
1, 3, 9, 139, 417, 1251

What is 1251 in binary?
10011100011