522240724 has 6 divisors (see below), whose sum is σ = 913921274. Its totient is φ = 261120360.

The previous prime is 522240701. The next prime is 522240727. The reversal of 522240724 is 427042225.

It can be written as a sum of positive squares in only one way, i.e., 498718224 + 23522500 = 22332^2 + 4850^2 .

It is a junction number, because it is equal to n+sod(n) for n = 522240692 and 522240701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522240727) by changing a digit.

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, 65280087 + ... + 65280094.

Almost surely, 2^522240724 is an apocalyptic number.

It is an amenable number.

522240724 is a deficient number, since it is larger than the sum of its proper divisors (391680550).

522240724 is a wasteful number, since it uses less digits than its factorization.

522240724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130560185 (or 130560183 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 522240724 is about 22852.5868120001. The cubic root of 522240724 is about 805.2985397858.

Adding to 522240724 its reverse (427042225), we get a palindrome (949282949).

The spelling of 522240724 in words is "five hundred twenty-two million, two hundred forty thousand, seven hundred twenty-four".