252222251 has 16 divisors (see below), whose sum is σ = 280830240. Its totient is φ = 225415680.

The previous prime is 252222211. The next prime is 252222259. The reversal of 252222251 is 152222252.

252222251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 252222251 - 2²² = 248027947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252222259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25880 + ... + 34266.

It is an arithmetic number, because the mean of its divisors is an integer number (17551890).

Almost surely, 2^252222251 is an apocalyptic number.

252222251 is a deficient number, since it is larger than the sum of its proper divisors (28607989).

252222251 is a wasteful number, since it uses less digits than its factorization.

252222251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8494.

The product of its digits is 1600, while the sum is 23.

The square root of 252222251 is about 15881.5065721108. The cubic root of 252222251 is about 631.8215953134.

Subtracting from 252222251 its reverse (152222252), we obtain a palindrome (99999999).

The spelling of 252222251 in words is "two hundred fifty-two million, two hundred twenty-two thousand, two hundred fifty-one".