8520503136 has 36 divisors (see below), whose sum is σ = 22368695076. Its totient is φ = 2839866240.

The previous prime is 8520503129. The next prime is 8520503161. The reversal of 8520503136 is 6313050258.

It is a junction number, because it is equal to n+sod(n) for n = 8520503097 and 8520503106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 899706 + ... + 909126.

It is an arithmetic number, because the mean of its divisors is an integer number (621352641).

Almost surely, 2^8520503136 is an apocalyptic number.

It is an amenable number.

8520503136 is an abundant number, since it is smaller than the sum of its proper divisors (13848191940).

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

8520503136 is an frugal number, since it uses more digits than its factorization.

8520503136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18855 (or 9426 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 8520503136 is about 92306.5714670413. The cubic root of 8520503136 is about 2042.4671496219.

Multiplying 8520503136 by its product of nonzero digits (21600), we get a square (184042867737600 = 13566240²).

The spelling of 8520503136 in words is "eight billion, five hundred twenty million, five hundred three thousand, one hundred thirty-six".