520715500 has 48 divisors (see below), whose sum is σ = 1147989024. Its totient is φ = 206318400.

The previous prime is 520715483. The next prime is 520715521. The reversal of 520715500 is 5517025.

It is a happy number.

It is a super-2 number, since 2×520715500² = 542289263880500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 15 ways as a sum of consecutive naturals, for example, 48634 + ... + 58366.

It is an arithmetic number, because the mean of its divisors is an integer number (23916438).

Almost surely, 2^520715500 is an apocalyptic number.

520715500 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 520715500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573994512).

520715500 is an abundant number, since it is smaller than the sum of its proper divisors (627273524).

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

520715500 is a wasteful number, since it uses less digits than its factorization.

520715500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9859 (or 9847 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 520715500 is about 22819.1914843625. The cubic root of 520715500 is about 804.5138069510.

The spelling of 520715500 in words is "five hundred twenty million, seven hundred fifteen thousand, five hundred".