251245053 has 6 divisors (see below), whose sum is σ = 362909534. Its totient is φ = 167496696.

The previous prime is 251245021. The next prime is 251245061. The reversal of 251245053 is 350542152.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 182736324 + 68508729 = 13518^2 + 8277^2 .

It is not a de Polignac number, because 251245053 - 2⁵ = 251245021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251245013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13958050 + ... + 13958067.

Almost surely, 2^251245053 is an apocalyptic number.

It is an amenable number.

251245053 is a deficient number, since it is larger than the sum of its proper divisors (111664481).

251245053 is a wasteful number, since it uses less digits than its factorization.

251245053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27916123 (or 27916120 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 251245053 is about 15850.7114351375. The cubic root of 251245053 is about 631.0045726565.

The spelling of 251245053 in words is "two hundred fifty-one million, two hundred forty-five thousand, fifty-three".