520005013 has 4 divisors (see below), whose sum is σ = 567278208. Its totient is φ = 472731820.

The previous prime is 520005011. The next prime is 520005019. The reversal of 520005013 is 310500025.

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 not a de Polignac number, because 520005013 - 2¹ = 520005011 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 (520005011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23636581 + ... + 23636602.

It is an arithmetic number, because the mean of its divisors is an integer number (141819552).

Almost surely, 2^520005013 is an apocalyptic number.

It is an amenable number.

520005013 is a deficient number, since it is larger than the sum of its proper divisors (47273195).

520005013 is a wasteful number, since it uses less digits than its factorization.

520005013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47273194.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 520005013 is about 22803.6184190141. The cubic root of 520005013 is about 804.1477357990.

Adding to 520005013 its reverse (310500025), we get a palindrome (830505038).

The spelling of 520005013 in words is "five hundred twenty million, five thousand, thirteen".