8523213 has 4 divisors (see below), whose sum is σ = 11364288. Its totient is φ = 5682140.

The previous prime is 8523211. The next prime is 8523223. The reversal of 8523213 is 3123258.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8523213 - 2¹ = 8523211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8523211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1420533 + ... + 1420538.

It is an arithmetic number, because the mean of its divisors is an integer number (2841072).

Almost surely, 2^8523213 is an apocalyptic number.

It is an amenable number.

8523213 is a deficient number, since it is larger than the sum of its proper divisors (2841075).

8523213 is a wasteful number, since it uses less digits than its factorization.

8523213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841074.

The product of its digits is 1440, while the sum is 24.

The square root of 8523213 is about 2919.4542298176. The cubic root of 8523213 is about 204.2683655676.

The spelling of 8523213 in words is "eight million, five hundred twenty-three thousand, two hundred thirteen".