251267 has 4 divisors (see below), whose sum is σ = 258096. Its totient is φ = 244440.

The previous prime is 251263. The next prime is 251287. The reversal of 251267 is 762152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 251267 - 2² = 251263 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 251267.

It is not an unprimeable number, because it can be changed into a prime (251261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3359 + ... + 3432.

It is an arithmetic number, because the mean of its divisors is an integer number (64524).

2²⁵¹²⁶⁷ is an apocalyptic number.

251267 is a deficient number, since it is larger than the sum of its proper divisors (6829).

251267 is an equidigital number, since it uses as much as digits as its factorization.

251267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6828.

The product of its digits is 840, while the sum is 23.

The square root of 251267 is about 501.2653987660. The cubic root of 251267 is about 63.1022945495.

The spelling of 251267 in words is "two hundred fifty-one thousand, two hundred sixty-seven".