520579900 has 72 divisors (see below), whose sum is σ = 1172036096. Its totient is φ = 200491200.

The previous prime is 520579867. The next prime is 520579937. The reversal of 520579900 is 9975025.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 520579900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 951427 + ... + 951973.

Almost surely, 2^520579900 is an apocalyptic number.

520579900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520579900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (586018048).

520579900 is an abundant number, since it is smaller than the sum of its proper divisors (651456196).

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

520579900 is a wasteful number, since it uses less digits than its factorization.

520579900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 520579900 is about 22816.2201076340. The cubic root of 520579900 is about 804.4439661626.

The spelling of 520579900 in words is "five hundred twenty million, five hundred seventy-nine thousand, nine hundred".