520345610 has 16 divisors (see below), whose sum is σ = 938471400. Its totient is φ = 207727296.

The previous prime is 520345589. The next prime is 520345613. The reversal of 520345610 is 16543025.

It can be written as a sum of positive squares in 4 ways, for example, as 491819329 + 28526281 = 22177^2 + 5341^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 520345610.

It is not an unprimeable number, because it can be changed into a prime (520345613) 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, 46025 + ... + 56204.

Almost surely, 2^520345610 is an apocalyptic number.

520345610 is a deficient number, since it is larger than the sum of its proper divisors (418125790).

520345610 is a wasteful number, since it uses less digits than its factorization.

520345610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102745.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 520345610 is about 22811.0852438020. The cubic root of 520345610 is about 804.3232664978.

Adding to 520345610 its reverse (16543025), we get a palindrome (536888635).

The spelling of 520345610 in words is "five hundred twenty million, three hundred forty-five thousand, six hundred ten".