520213505 has 16 divisors (see below), whose sum is σ = 715336320. Its totient is φ = 355767552.

The previous prime is 520213487. The next prime is 520213543. The reversal of 520213505 is 505312025.

It is not a de Polignac number, because 520213505 - 2¹⁰ = 520212481 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6344 + ... + 32873.

It is an arithmetic number, because the mean of its divisors is an integer number (44708520).

Almost surely, 2^520213505 is an apocalyptic number.

It is an amenable number.

520213505 is a deficient number, since it is larger than the sum of its proper divisors (195122815).

520213505 is a wasteful number, since it uses less digits than its factorization.

520213505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39608.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 520213505 is about 22808.1894283610. The cubic root of 520213505 is about 804.2551937167.

The spelling of 520213505 in words is "five hundred twenty million, two hundred thirteen thousand, five hundred five".