252431887 has 4 divisors (see below), whose sum is σ = 258302440. Its totient is φ = 246561336.

The previous prime is 252431873. The next prime is 252431941. The reversal of 252431887 is 788134252.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252431887 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 (252431807) 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, 2935212 + ... + 2935297.

It is an arithmetic number, because the mean of its divisors is an integer number (64575610).

Almost surely, 2^252431887 is an apocalyptic number.

252431887 is a deficient number, since it is larger than the sum of its proper divisors (5870553).

252431887 is an equidigital number, since it uses as much as digits as its factorization.

252431887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5870552.

The product of its digits is 107520, while the sum is 40.

The square root of 252431887 is about 15888.1052048380. The cubic root of 252431887 is about 631.9965942441.

The spelling of 252431887 in words is "two hundred fifty-two million, four hundred thirty-one thousand, eight hundred eighty-seven".