252551224 has 32 divisors (see below), whose sum is σ = 502244640. Its totient is φ = 118800000.

The previous prime is 252551191. The next prime is 252551231. The reversal of 252551224 is 422155252.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 252551192 and 252551201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27 + ... + 22474.

It is an arithmetic number, because the mean of its divisors is an integer number (15695145).

Almost surely, 2^252551224 is an apocalyptic number.

It is an amenable number.

252551224 is a deficient number, since it is larger than the sum of its proper divisors (249693416).

252551224 is a wasteful number, since it uses less digits than its factorization.

252551224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22591 (or 22587 counting only the distinct ones).

The product of its digits is 8000, while the sum is 28.

The square root of 252551224 is about 15891.8603064588. The cubic root of 252551224 is about 632.0961705384.

The spelling of 252551224 in words is "two hundred fifty-two million, five hundred fifty-one thousand, two hundred twenty-four".