520410013 has 4 divisors (see below), whose sum is σ = 521251360. Its totient is φ = 519568668.

The previous prime is 520409977. The next prime is 520410041. The reversal of 520410013 is 310014025.

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 520410013 - 2¹³ = 520401821 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 (520410073) 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, 419745 + ... + 420982.

It is an arithmetic number, because the mean of its divisors is an integer number (130312840).

Almost surely, 2^520410013 is an apocalyptic number.

It is an amenable number.

520410013 is a deficient number, since it is larger than the sum of its proper divisors (841347).

520410013 is an equidigital number, since it uses as much as digits as its factorization.

520410013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841346.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 520410013 is about 22812.4968602738. The cubic root of 520410013 is about 804.3564487350.

Adding to 520410013 its reverse (310014025), we get a palindrome (830424038).

The spelling of 520410013 in words is "five hundred twenty million, four hundred ten thousand, thirteen".