252218474 has 8 divisors (see below), whose sum is σ = 381863808. Its totient is φ = 124930540.

The previous prime is 252218453. The next prime is 252218489. The reversal of 252218474 is 474812252.

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

It is a super-2 number, since 2×252218474² = 127228317253777352, which contains 22 as substring.

It is a Curzon number.

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, 589082 + ... + 589509.

It is an arithmetic number, because the mean of its divisors is an integer number (47732976).

Almost surely, 2^252218474 is an apocalyptic number.

252218474 is a deficient number, since it is larger than the sum of its proper divisors (129645334).

252218474 is a wasteful number, since it uses less digits than its factorization.

252218474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178700.

The product of its digits is 35840, while the sum is 35.

The square root of 252218474 is about 15881.3876597733. The cubic root of 252218474 is about 631.8184414784.

The spelling of 252218474 in words is "two hundred fifty-two million, two hundred eighteen thousand, four hundred seventy-four".