520577620 has 12 divisors (see below), whose sum is σ = 1093213044. Its totient is φ = 208231040.

The previous prime is 520577597. The next prime is 520577627. The reversal of 520577620 is 26775025.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 169989444 + 350588176 = 13038^2 + 18724^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520577627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13014421 + ... + 13014460.

It is an arithmetic number, because the mean of its divisors is an integer number (91101087).

Almost surely, 2^520577620 is an apocalyptic number.

It is an amenable number.

520577620 is an abundant number, since it is smaller than the sum of its proper divisors (572635424).

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

520577620 is a wasteful number, since it uses less digits than its factorization.

520577620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26028890 (or 26028888 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 520577620 is about 22816.1701431244. The cubic root of 520577620 is about 804.4427917448.

The spelling of 520577620 in words is "five hundred twenty million, five hundred seventy-seven thousand, six hundred twenty".