252221344 has 12 divisors (see below), whose sum is σ = 496560834. Its totient is φ = 126110656.

The previous prime is 252221339. The next prime is 252221357. The reversal of 252221344 is 443122252.

It can be written as a sum of positive squares in only one way, i.e., 134281744 + 117939600 = 11588^2 + 10860^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3940927 + ... + 3940990.

Almost surely, 2^252221344 is an apocalyptic number.

It is an amenable number.

252221344 is a deficient number, since it is larger than the sum of its proper divisors (244339490).

252221344 is an equidigital number, since it uses as much as digits as its factorization.

252221344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7881927 (or 7881919 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 252221344 is about 15881.4780168598. The cubic root of 252221344 is about 631.8208379616.

Adding to 252221344 its reverse (443122252), we get a palindrome (695343596).

The spelling of 252221344 in words is "two hundred fifty-two million, two hundred twenty-one thousand, three hundred forty-four".