520240544 has 12 divisors (see below), whose sum is σ = 1024223634. Its totient is φ = 260120256.

The previous prime is 520240507. The next prime is 520240547. The reversal of 520240544 is 445042025.

It can be written as a sum of positive squares in only one way, i.e., 288592144 + 231648400 = 16988^2 + 15220^2 .

It is not an unprimeable number, because it can be changed into a prime (520240547) 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, 8128727 + ... + 8128790.

Almost surely, 2^520240544 is an apocalyptic number.

It is an amenable number.

520240544 is a deficient number, since it is larger than the sum of its proper divisors (503983090).

520240544 is a wasteful number, since it uses less digits than its factorization.

520240544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16257527 (or 16257519 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 520240544 is about 22808.7821682790. The cubic root of 520240544 is about 804.2691276619.

Adding to 520240544 its reverse (445042025), we get a palindrome (965282569).

The spelling of 520240544 in words is "five hundred twenty million, two hundred forty thousand, five hundred forty-four".