8521617552 has 80 divisors (see below), whose sum is σ = 25176400512. Its totient is φ = 2433070080.

The previous prime is 8521617529. The next prime is 8521617581. The reversal of 8521617552 is 2557161258.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 528652 + ... + 544532.

Almost surely, 2^8521617552 is an apocalyptic number.

It is an amenable number.

8521617552 is an abundant number, since it is smaller than the sum of its proper divisors (16654782960).

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

8521617552 is a wasteful number, since it uses less digits than its factorization.

8521617552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17496 (or 17490 counting only the distinct ones).

The product of its digits is 168000, while the sum is 42.

The square root of 8521617552 is about 92312.6077629703. The cubic root of 8521617552 is about 2042.5561920493.

The spelling of 8521617552 in words is "eight billion, five hundred twenty-one million, six hundred seventeen thousand, five hundred fifty-two".