520530500 has 48 divisors (see below), whose sum is σ = 1299252864. Its totient is φ = 178466400.

The previous prime is 520530487. The next prime is 520530529. The reversal of 520530500 is 5035025.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 15 ways as a sum of consecutive naturals, for example, 70862 + ... + 77861.

It is an arithmetic number, because the mean of its divisors is an integer number (27067768).

Almost surely, 2^520530500 is an apocalyptic number.

520530500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

520530500 is an abundant number, since it is smaller than the sum of its proper divisors (778722364).

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

520530500 is a wasteful number, since it uses less digits than its factorization.

520530500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148749 (or 148737 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 520530500 is about 22815.1375187615. The cubic root of 520530500 is about 804.4185196756.

Adding to 520530500 its reverse (5035025), we get a palindrome (525565525).

The spelling of 520530500 in words is "five hundred twenty million, five hundred thirty thousand, five hundred".