520278222 has 16 divisors (see below), whose sum is σ = 1042300800. Its totient is φ = 173135352.

The previous prime is 520278181. The next prime is 520278223. The reversal of 520278222 is 222872025.

It is a self number, because there is not a number n which added to its sum of digits gives 520278222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520278223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68788 + ... + 75975.

It is an arithmetic number, because the mean of its divisors is an integer number (65143800).

Almost surely, 2^520278222 is an apocalyptic number.

520278222 is an abundant number, since it is smaller than the sum of its proper divisors (522022578).

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

520278222 is a wasteful number, since it uses less digits than its factorization.

520278222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145367.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 520278222 is about 22809.6081071114. The cubic root of 520278222 is about 804.2885433732.

The spelling of 520278222 in words is "five hundred twenty million, two hundred seventy-eight thousand, two hundred twenty-two".