252642529 has 4 divisors (see below), whose sum is σ = 260792320. Its totient is φ = 244492740.

The previous prime is 252642527. The next prime is 252642547. The reversal of 252642529 is 925246252.

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 252642529 - 2¹ = 252642527 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252642527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4074849 + ... + 4074910.

It is an arithmetic number, because the mean of its divisors is an integer number (65198080).

Almost surely, 2^252642529 is an apocalyptic number.

It is an amenable number.

252642529 is a deficient number, since it is larger than the sum of its proper divisors (8149791).

252642529 is an equidigital number, since it uses as much as digits as its factorization.

252642529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8149790.

The product of its digits is 86400, while the sum is 37.

The square root of 252642529 is about 15894.7327438998. The cubic root of 252642529 is about 632.1723354002.

The spelling of 252642529 in words is "two hundred fifty-two million, six hundred forty-two thousand, five hundred twenty-nine".