252522442 has 4 divisors (see below), whose sum is σ = 378783666. Its totient is φ = 126261220.

The previous prime is 252522427. The next prime is 252522449. The reversal of 252522442 is 244225252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 186896241 + 65626201 = 13671^2 + 8101^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 252522442.

It is not an unprimeable number, because it can be changed into a prime (252522449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63130609 + ... + 63130612.

Almost surely, 2^252522442 is an apocalyptic number.

252522442 is a deficient number, since it is larger than the sum of its proper divisors (126261224).

252522442 is a wasteful number, since it uses less digits than its factorization.

252522442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126261223.

The product of its digits is 12800, while the sum is 28.

The square root of 252522442 is about 15890.9547227346. The cubic root of 252522442 is about 632.0721573464.

Adding to 252522442 its reverse (244225252), we get a palindrome (496747694).

The spelling of 252522442 in words is "two hundred fifty-two million, five hundred twenty-two thousand, four hundred forty-two".