8213529 has 16 divisors (see below), whose sum is σ = 11648000. Its totient is φ = 5133456.

The previous prime is 8213503. The next prime is 8213531. The reversal of 8213529 is 9253128.

It is a happy number.

It is not a de Polignac number, because 8213529 - 2⁵ = 8213497 is a prime.

It is a Duffinian number.

8213529 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8213496 and 8213505.

It is not an unprimeable number, because it can be changed into a prime (8213549) 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, 5172 + ... + 6570.

It is an arithmetic number, because the mean of its divisors is an integer number (728000).

Almost surely, 2^8213529 is an apocalyptic number.

It is an amenable number.

8213529 is a deficient number, since it is larger than the sum of its proper divisors (3434471).

8213529 is a wasteful number, since it uses less digits than its factorization.

8213529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524.

The product of its digits is 4320, while the sum is 30.

The square root of 8213529 is about 2865.9255049634. The cubic root of 8213529 is about 201.7638075215.

The spelling of 8213529 in words is "eight million, two hundred thirteen thousand, five hundred twenty-nine".