8528991 has 8 divisors (see below), whose sum is σ = 11398704. Its totient is φ = 5672640.

The previous prime is 8528983. The next prime is 8529023. The reversal of 8528991 is 1998258.

It is a happy number.

8528991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8528991 - 2³ = 8528983 is a prime.

8528991 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8528911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1740 + ... + 4481.

It is an arithmetic number, because the mean of its divisors is an integer number (1424838).

Almost surely, 2^8528991 is an apocalyptic number.

8528991 is a deficient number, since it is larger than the sum of its proper divisors (2869713).

8528991 is a wasteful number, since it uses less digits than its factorization.

8528991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681.

The product of its digits is 51840, while the sum is 42.

The square root of 8528991 is about 2920.4436306835. The cubic root of 8528991 is about 204.3145138926.

The spelling of 8528991 in words is "eight million, five hundred twenty-eight thousand, nine hundred ninety-one".