520577220 has 24 divisors (see below), whose sum is σ = 1457616384. Its totient is φ = 138820576.

The previous prime is 520577207. The next prime is 520577261. The reversal of 520577220 is 22775025.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4338084 + ... + 4338203.

It is an arithmetic number, because the mean of its divisors is an integer number (60734016).

Almost surely, 2^520577220 is an apocalyptic number.

It is an amenable number.

520577220 is an abundant number, since it is smaller than the sum of its proper divisors (937039164).

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

520577220 is a wasteful number, since it uses less digits than its factorization.

520577220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8676299 (or 8676297 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 520577220 is about 22816.1613774097. The cubic root of 520577220 is about 804.4425857062.

The spelling of 520577220 in words is "five hundred twenty million, five hundred seventy-seven thousand, two hundred twenty".