252578121 has 4 divisors (see below), whose sum is σ = 336770832. Its totient is φ = 168385412.

The previous prime is 252578119. The next prime is 252578171. The reversal of 252578121 is 121875252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252578121 - 2¹ = 252578119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252578171) 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, 42096351 + ... + 42096356.

It is an arithmetic number, because the mean of its divisors is an integer number (84192708).

Almost surely, 2^252578121 is an apocalyptic number.

It is an amenable number.

252578121 is a deficient number, since it is larger than the sum of its proper divisors (84192711).

252578121 is an equidigital number, since it uses as much as digits as its factorization.

252578121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84192710.

The product of its digits is 11200, while the sum is 33.

The square root of 252578121 is about 15892.7065347599. The cubic root of 252578121 is about 632.1186094017.

The spelling of 252578121 in words is "two hundred fifty-two million, five hundred seventy-eight thousand, one hundred twenty-one".