520222216 has 8 divisors (see below), whose sum is σ = 975416670. Its totient is φ = 260111104.

The previous prime is 520222207. The next prime is 520222231. The reversal of 520222216 is 612222025.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 499701316 + 20520900 = 22354^2 + 4530^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32513881 + ... + 32513896.

Almost surely, 2^520222216 is an apocalyptic number.

It is an amenable number.

520222216 is a deficient number, since it is larger than the sum of its proper divisors (455194454).

520222216 is a wasteful number, since it uses less digits than its factorization.

520222216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65027783 (or 65027779 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 520222216 is about 22808.3803896726. The cubic root of 520222216 is about 804.2596827888.

The spelling of 520222216 in words is "five hundred twenty million, two hundred twenty-two thousand, two hundred sixteen".