8528221500 has 48 divisors (see below), whose sum is σ = 24834185376. Its totient is φ = 2274192000.

The previous prime is 8528221477. The next prime is 8528221517. The reversal of 8528221500 is 51228258.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2841241 + ... + 2844240.

It is an arithmetic number, because the mean of its divisors is an integer number (517378862).

Almost surely, 2^8528221500 is an apocalyptic number.

It is an amenable number.

8528221500 is an abundant number, since it is smaller than the sum of its proper divisors (16305963876).

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

8528221500 is a wasteful number, since it uses less digits than its factorization.

8528221500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5685503 (or 5685491 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 8528221500 is about 92348.3703158859. The cubic root of 8528221500 is about 2043.0836917411.

Adding to 8528221500 its reverse (51228258), we get a palindrome (8579449758).

The spelling of 8528221500 in words is "eight billion, five hundred twenty-eight million, two hundred twenty-one thousand, five hundred".