520712212 has 12 divisors (see below), whose sum is σ = 923729716. Its totient is φ = 256789440.

The previous prime is 520712207. The next prime is 520712221. The reversal of 520712212 is 212217025.

It can be written as a sum of positive squares in 2 ways, for example, as 191434896 + 329277316 = 13836^2 + 18146^2 .

It is a super-2 number, since 2×520712212² = 542282415451865888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891339 + ... + 891922.

Almost surely, 2^520712212 is an apocalyptic number.

It is an amenable number.

520712212 is a deficient number, since it is larger than the sum of its proper divisors (403017504).

520712212 is a wasteful number, since it uses less digits than its factorization.

520712212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783338 (or 1783336 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 520712212 is about 22819.1194396278. The cubic root of 520712212 is about 804.5121136099.

Adding to 520712212 its reverse (212217025), we get a palindrome (732929237).

The spelling of 520712212 in words is "five hundred twenty million, seven hundred twelve thousand, two hundred twelve".