252130357 has 4 divisors (see below), whose sum is σ = 252357196. Its totient is φ = 251903520.

The previous prime is 252130339. The next prime is 252130387. The reversal of 252130357 is 753031252.

252130357 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 can be written as a sum of positive squares in 2 ways, for example, as 22335076 + 229795281 = 4726^2 + 15159^2 .

It is a cyclic number.

It is not a de Polignac number, because 252130357 - 2¹⁵ = 252097589 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 (252130327) 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, 111744 + ... + 113977.

It is an arithmetic number, because the mean of its divisors is an integer number (63089299).

Almost surely, 2^252130357 is an apocalyptic number.

It is an amenable number.

252130357 is a deficient number, since it is larger than the sum of its proper divisors (226839).

252130357 is a wasteful number, since it uses less digits than its factorization.

252130357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226838.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 252130357 is about 15878.6131951125. The cubic root of 252130357 is about 631.7448539129.

The spelling of 252130357 in words is "two hundred fifty-two million, one hundred thirty thousand, three hundred fifty-seven".