8521144 has 16 divisors (see below), whose sum is σ = 16197120. Its totient is φ = 4201920.

The previous prime is 8521141. The next prime is 8521171. The reversal of 8521144 is 4411258.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6712 + ... + 7879.

It is an arithmetic number, because the mean of its divisors is an integer number (1012320).

Almost surely, 2^8521144 is an apocalyptic number.

It is an amenable number.

8521144 is a deficient number, since it is larger than the sum of its proper divisors (7675976).

8521144 is a wasteful number, since it uses less digits than its factorization.

8521144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14670 (or 14666 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 8521144 is about 2919.0998612586. The cubic root of 8521144 is about 204.2518355943.

The spelling of 8521144 in words is "eight million, five hundred twenty-one thousand, one hundred forty-four".