251068 has 12 divisors (see below), whose sum is σ = 458640. Its totient is φ = 120032.

The previous prime is 251063. The next prime is 251071. The reversal of 251068 is 860152.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1273 + ... + 1456.

It is an arithmetic number, because the mean of its divisors is an integer number (38220).

2²⁵¹⁰⁶⁸ is an apocalyptic number.

It is an amenable number.

251068 is a deficient number, since it is larger than the sum of its proper divisors (207572).

251068 is a wasteful number, since it uses less digits than its factorization.

251068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756 (or 2754 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 251068 is about 501.0668618059. The cubic root of 251068 is about 63.0856314339.

The spelling of 251068 in words is "two hundred fifty-one thousand, sixty-eight".