522421216 has 12 divisors (see below), whose sum is σ = 1028516832. Its totient is φ = 261210592.

The previous prime is 522421213. The next prime is 522421217. The reversal of 522421216 is 612124225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522421213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8162800 + ... + 8162863.

It is an arithmetic number, because the mean of its divisors is an integer number (85709736).

Almost surely, 2^522421216 is an apocalyptic number.

It is an amenable number.

522421216 is a deficient number, since it is larger than the sum of its proper divisors (506095616).

522421216 is a wasteful number, since it uses less digits than its factorization.

522421216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16325673 (or 16325665 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 522421216 is about 22856.5355205027. The cubic root of 522421216 is about 805.3913023732.

The spelling of 522421216 in words is "five hundred twenty-two million, four hundred twenty-one thousand, two hundred sixteen".