8520413 has 4 divisors (see below), whose sum is σ = 9295008. Its totient is φ = 7745820.

The previous prime is 8520409. The next prime is 8520427. The reversal of 8520413 is 3140258.

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 8520413 - 2² = 8520409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8520433) 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, 387281 + ... + 387302.

It is an arithmetic number, because the mean of its divisors is an integer number (2323752).

Almost surely, 2^8520413 is an apocalyptic number.

It is an amenable number.

8520413 is a deficient number, since it is larger than the sum of its proper divisors (774595).

8520413 is a wasteful number, since it uses less digits than its factorization.

8520413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774594.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 8520413 is about 2918.9746487423. The cubic root of 8520413 is about 204.2459947369.

The spelling of 8520413 in words is "eight million, five hundred twenty thousand, four hundred thirteen".