8529521 has 16 divisors (see below), whose sum is σ = 11453568. Its totient is φ = 6134400.

The previous prime is 8529473. The next prime is 8529559. The reversal of 8529521 is 1259258.

It is a cyclic number.

It is not a de Polignac number, because 8529521 - 2¹⁴ = 8513137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8529221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3260 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (715848).

Almost surely, 2^8529521 is an apocalyptic number.

It is an amenable number.

8529521 is a deficient number, since it is larger than the sum of its proper divisors (2924047).

8529521 is a wasteful number, since it uses less digits than its factorization.

8529521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8552.

The product of its digits is 7200, while the sum is 32.

The square root of 8529521 is about 2920.5343689126. The cubic root of 8529521 is about 204.3187459075.

The spelling of 8529521 in words is "eight million, five hundred twenty-nine thousand, five hundred twenty-one".