520404222 has 32 divisors (see below), whose sum is σ = 1121758848. Its totient is φ = 159997536.

The previous prime is 520404169. The next prime is 520404229. The reversal of 520404222 is 222404025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520404229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160873 + ... + 164075.

It is an arithmetic number, because the mean of its divisors is an integer number (35054964).

Almost surely, 2^520404222 is an apocalyptic number.

520404222 is an abundant number, since it is smaller than the sum of its proper divisors (601354626).

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

520404222 is a wasteful number, since it uses less digits than its factorization.

520404222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5304.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 520404222 is about 22812.3699338758. The cubic root of 520404222 is about 804.3534651609.

Adding to 520404222 its reverse (222404025), we get a palindrome (742808247).

The spelling of 520404222 in words is "five hundred twenty million, four hundred four thousand, two hundred twenty-two".