251052163 has 4 divisors (see below), whose sum is σ = 251458360. Its totient is φ = 250645968.

The previous prime is 251052161. The next prime is 251052169. The reversal of 251052163 is 361250152.

251052163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 251052163 - 2¹ = 251052161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251052161) 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, 202170 + ... + 203407.

It is an arithmetic number, because the mean of its divisors is an integer number (62864590).

Almost surely, 2^251052163 is an apocalyptic number.

251052163 is a deficient number, since it is larger than the sum of its proper divisors (406197).

251052163 is an equidigital number, since it uses as much as digits as its factorization.

251052163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406196.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 251052163 is about 15844.6256819150. The cubic root of 251052163 is about 630.8430495643.

The spelling of 251052163 in words is "two hundred fifty-one million, fifty-two thousand, one hundred sixty-three".