522020224 has 128 divisors (see below), whose sum is σ = 1218149280. Its totient is φ = 220200960.

The previous prime is 522020209. The next prime is 522020243. The reversal of 522020224 is 422020225.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×522020224² = 545010228530020352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2704672 + ... + 2704864.

Almost surely, 2^522020224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522020224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609074640).

522020224 is an abundant number, since it is smaller than the sum of its proper divisors (696129056).

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

522020224 is a wasteful number, since it uses less digits than its factorization.

522020224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 522020224 is about 22847.7619035213. The cubic root of 522020224 is about 805.1851863604.

Adding to 522020224 its reverse (422020225), we get a palindrome (944040449).

Subtracting from 522020224 its reverse (422020225), we obtain a palindrome (99999999).

The spelling of 522020224 in words is "five hundred twenty-two million, twenty thousand, two hundred twenty-four".