522052221 has 16 divisors (see below), whose sum is σ = 714909888. Its totient is φ = 338659200.

The previous prime is 522052217. The next prime is 522052243. The reversal of 522052221 is 122250225.

It is not a de Polignac number, because 522052221 - 2² = 522052217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522052211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43486 + ... + 54176.

It is an arithmetic number, because the mean of its divisors is an integer number (44681868).

Almost surely, 2^522052221 is an apocalyptic number.

It is an amenable number.

522052221 is a deficient number, since it is larger than the sum of its proper divisors (192857667).

522052221 is a wasteful number, since it uses less digits than its factorization.

522052221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11132.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 522052221 is about 22848.4621145494. The cubic root of 522052221 is about 805.2016371816.

The spelling of 522052221 in words is "five hundred twenty-two million, fifty-two thousand, two hundred twenty-one".