252221670 has 48 divisors (see below), whose sum is σ = 657008352. Its totient is φ = 67132800.

The previous prime is 252221653. The next prime is 252221699. The reversal of 252221670 is 76122252.

252221670 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51759 + ... + 56421.

It is an arithmetic number, because the mean of its divisors is an integer number (13687674).

Almost surely, 2^252221670 is an apocalyptic number.

252221670 is an abundant number, since it is smaller than the sum of its proper divisors (404786682).

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

252221670 is a wasteful number, since it uses less digits than its factorization.

252221670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277 (or 5274 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 252221670 is about 15881.4882803848. The cubic root of 252221670 is about 631.8211101743.

The spelling of 252221670 in words is "two hundred fifty-two million, two hundred twenty-one thousand, six hundred seventy".