520005775 has 48 divisors (see below), whose sum is σ = 729596160. Its totient is φ = 365299200.

The previous prime is 520005743. The next prime is 520005799. The reversal of 520005775 is 577500025.

It is not a de Polignac number, because 520005775 - 2⁵ = 520005743 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 572872 + ... + 573778.

It is an arithmetic number, because the mean of its divisors is an integer number (15199920).

Almost surely, 2^520005775 is an apocalyptic number.

520005775 is a deficient number, since it is larger than the sum of its proper divisors (209590385).

520005775 is a wasteful number, since it uses less digits than its factorization.

520005775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 31.

The square root of 520005775 is about 22803.6351268827. The cubic root of 520005775 is about 804.1481285903.

It can be divided in two parts, 52000 and 5775, that added together give a palindrome (57775).

The spelling of 520005775 in words is "five hundred twenty million, five thousand, seven hundred seventy-five".