252217616 has 20 divisors (see below), whose sum is σ = 558482112. Its totient is φ = 108093216.

The previous prime is 252217577. The next prime is 252217639. The reversal of 252217616 is 616712252.

It is a super-2 number, since 2×252217616² = 127227451641446912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1125860 + ... + 1126083.

Almost surely, 2^252217616 is an apocalyptic number.

It is an amenable number.

252217616 is an abundant number, since it is smaller than the sum of its proper divisors (306264496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252217616 is a wasteful number, since it uses less digits than its factorization.

252217616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251958 (or 2251952 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 252217616 is about 15881.3606469975. The cubic root of 252217616 is about 631.8177250349.

Adding to 252217616 its reverse (616712252), we get a palindrome (868929868).

The spelling of 252217616 in words is "two hundred fifty-two million, two hundred seventeen thousand, six hundred sixteen".