8521004 has 6 divisors (see below), whose sum is σ = 14911764. Its totient is φ = 4260500.

The previous prime is 8521003. The next prime is 8521013. The reversal of 8521004 is 4001258.

It is not an unprimeable number, because it can be changed into a prime (8521003) by changing a digit.

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 as a sum of consecutive naturals, namely, 1065122 + ... + 1065129.

It is an arithmetic number, because the mean of its divisors is an integer number (2485294).

Almost surely, 2^8521004 is an apocalyptic number.

It is an amenable number.

8521004 is a deficient number, since it is larger than the sum of its proper divisors (6390760).

8521004 is a wasteful number, since it uses less digits than its factorization.

8521004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130255 (or 2130253 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 8521004 is about 2919.0758811651. The cubic root of 8521004 is about 204.2507169881.

The spelling of 8521004 in words is "eight million, five hundred twenty-one thousand, four".