252131045 has 8 divisors (see below), whose sum is σ = 318481440. Its totient is φ = 191088720.

The previous prime is 252131039. The next prime is 252131069. The reversal of 252131045 is 540131252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 252131045 - 2⁶ = 252130981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252131045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1326911 + ... + 1327100.

It is an arithmetic number, because the mean of its divisors is an integer number (39810180).

Almost surely, 2^252131045 is an apocalyptic number.

It is an amenable number.

252131045 is a deficient number, since it is larger than the sum of its proper divisors (66350395).

252131045 is a wasteful number, since it uses less digits than its factorization.

252131045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654035.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 252131045 is about 15878.6348594582. The cubic root of 252131045 is about 631.7454285364.

Adding to 252131045 its reverse (540131252), we get a palindrome (792262297).

The spelling of 252131045 in words is "two hundred fifty-two million, one hundred thirty-one thousand, forty-five".