8521553484 has 120 divisors (see below), whose sum is σ = 24033306528. Its totient is φ = 2622896640.

The previous prime is 8521553483. The next prime is 8521553543. The reversal of 8521553484 is 4843551258.

8521553484 is a `hidden beast` number, since 8 + 52 + 1 + 553 + 48 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (8521553483) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 277329 + ... + 306519.

Almost surely, 2^8521553484 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8521553484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12016653264).

8521553484 is an abundant number, since it is smaller than the sum of its proper divisors (15511753044).

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

8521553484 is a wasteful number, since it uses less digits than its factorization.

8521553484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29277 (or 29266 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The square root of 8521553484 is about 92312.2607457969. The cubic root of 8521553484 is about 2042.5510731925.

The spelling of 8521553484 in words is "eight billion, five hundred twenty-one million, five hundred fifty-three thousand, four hundred eighty-four".