8521552 has 40 divisors (see below), whose sum is σ = 18139464. Its totient is φ = 3853824.

The previous prime is 8521501. The next prime is 8521561. The reversal of 8521552 is 2551258.

It can be written as a sum of positive squares in 4 ways, for example, as 18496 + 8503056 = 136^2 + 2916^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8521552.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10638 + ... + 11410.

Almost surely, 2^8521552 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 8521552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9069732).

8521552 is an abundant number, since it is smaller than the sum of its proper divisors (9617912).

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

8521552 is a wasteful number, since it uses less digits than its factorization.

8521552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 841 counting only the distinct ones).

The product of its digits is 4000, while the sum is 28.

The square root of 8521552 is about 2919.1697449789. The cubic root of 8521552 is about 204.2550954625.

The spelling of 8521552 in words is "eight million, five hundred twenty-one thousand, five hundred fifty-two".