520540244 has 24 divisors (see below), whose sum is σ = 1058729280. Its totient is φ = 219306816.

The previous prime is 520540217. The next prime is 520540247. The reversal of 520540244 is 442045025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520540247) 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 in 7 ways as a sum of consecutive naturals, for example, 155897 + ... + 159200.

It is an arithmetic number, because the mean of its divisors is an integer number (44113720).

Almost surely, 2^520540244 is an apocalyptic number.

It is an amenable number.

520540244 is an abundant number, since it is smaller than the sum of its proper divisors (538189036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520540244 is a wasteful number, since it uses less digits than its factorization.

520540244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315167 (or 315165 counting only the distinct ones).

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

The square root of 520540244 is about 22815.3510601963. The cubic root of 520540244 is about 804.4235390454.

Adding to 520540244 its reverse (442045025), we get a palindrome (962585269).

The spelling of 520540244 in words is "five hundred twenty million, five hundred forty thousand, two hundred forty-four".