522781316 has 12 divisors (see below), whose sum is σ = 915214860. Its totient is φ = 261291360.

The previous prime is 522781271. The next prime is 522781319. The reversal of 522781316 is 613187225.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 265820416 + 256960900 = 16304^2 + 16030^2 .

It is not an unprimeable number, because it can be changed into a prime (522781319) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12275 + ... + 34586.

It is an arithmetic number, because the mean of its divisors is an integer number (76267905).

Almost surely, 2^522781316 is an apocalyptic number.

It is an amenable number.

522781316 is a deficient number, since it is larger than the sum of its proper divisors (392433544).

522781316 is a wasteful number, since it uses less digits than its factorization.

522781316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49654 (or 49652 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 522781316 is about 22864.4115603267. The cubic root of 522781316 is about 805.5763094060.

The spelling of 522781316 in words is "five hundred twenty-two million, seven hundred eighty-one thousand, three hundred sixteen".