252152321 has 4 divisors (see below), whose sum is σ = 257517312. Its totient is φ = 246787332.

The previous prime is 252152309. The next prime is 252152339. The reversal of 252152321 is 123251252.

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 252152321 - 2¹⁰ = 252151297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252142321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2682425 + ... + 2682518.

It is an arithmetic number, because the mean of its divisors is an integer number (64379328).

Almost surely, 2^252152321 is an apocalyptic number.

It is an amenable number.

252152321 is a deficient number, since it is larger than the sum of its proper divisors (5364991).

252152321 is an equidigital number, since it uses as much as digits as its factorization.

252152321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5364990.

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

The square root of 252152321 is about 15879.3048021631. The cubic root of 252152321 is about 631.7631979172.

The spelling of 252152321 in words is "two hundred fifty-two million, one hundred fifty-two thousand, three hundred twenty-one".