8529921 has 16 divisors (see below), whose sum is σ = 12683520. Its totient is φ = 5665680.

The previous prime is 8529919. The next prime is 8529923. The reversal of 8529921 is 1299258.

It is an interprime number because it is at equal distance from previous prime (8529919) and next prime (8529923).

It is not a de Polignac number, because 8529921 - 2¹ = 8529919 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8529923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11271 + ... + 12003.

It is an arithmetic number, because the mean of its divisors is an integer number (792720).

Almost surely, 2^8529921 is an apocalyptic number.

It is an amenable number.

8529921 is a deficient number, since it is larger than the sum of its proper divisors (4153599).

8529921 is a wasteful number, since it uses less digits than its factorization.

8529921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173 (or 1167 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 8529921 is about 2920.6028487283. The cubic root of 8529921 is about 204.3219397649.

The spelling of 8529921 in words is "eight million, five hundred twenty-nine thousand, nine hundred twenty-one".