520843252 has 12 divisors (see below), whose sum is σ = 912685060. Its totient is φ = 260076096.

The previous prime is 520843241. The next prime is 520843289. The reversal of 520843252 is 252348025.

It can be written as a sum of positive squares in 2 ways, for example, as 341658256 + 179184996 = 18484^2 + 13386^2 .

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 3 ways as a sum of consecutive naturals, for example, 82977 + ... + 89032.

Almost surely, 2^520843252 is an apocalyptic number.

It is an amenable number.

520843252 is a deficient number, since it is larger than the sum of its proper divisors (391841808).

520843252 is a wasteful number, since it uses less digits than its factorization.

520843252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172770 (or 172768 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 520843252 is about 22821.9905354463. The cubic root of 520843252 is about 804.5795945349.

The spelling of 520843252 in words is "five hundred twenty million, eight hundred forty-three thousand, two hundred fifty-two".