252527221 has 8 divisors (see below), whose sum is σ = 259812224. Its totient is φ = 245345760.

The previous prime is 252527203. The next prime is 252527227. The reversal of 252527221 is 122725252.

252527221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252527221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252527221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252527227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20925 + ... + 30706.

It is an arithmetic number, because the mean of its divisors is an integer number (32476528).

Almost surely, 2^252527221 is an apocalyptic number.

It is an amenable number.

252527221 is a deficient number, since it is larger than the sum of its proper divisors (7285003).

252527221 is an equidigital number, since it uses as much as digits as its factorization.

252527221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51771.

The product of its digits is 5600, while the sum is 28.

The square root of 252527221 is about 15891.1050905845. The cubic root of 252527221 is about 632.0761446537.

The spelling of 252527221 in words is "two hundred fifty-two million, five hundred twenty-seven thousand, two hundred twenty-one".