520344113 has 2 divisors, whose sum is σ = 520344114. Its totient is φ = 520344112.

The previous prime is 520344067. The next prime is 520344131. The reversal of 520344113 is 311443025.

Together with next prime (520344131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 470542864 + 49801249 = 21692^2 + 7057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520344113 is a prime.

It is not a weakly prime, because it can be changed into another prime (520344133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260172056 + 260172057.

It is an arithmetic number, because the mean of its divisors is an integer number (260172057).

Almost surely, 2^520344113 is an apocalyptic number.

It is an amenable number.

520344113 is a deficient number, since it is larger than the sum of its proper divisors (1).

520344113 is an equidigital number, since it uses as much as digits as its factorization.

520344113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 520344113 is about 22811.0524307845. The cubic root of 520344113 is about 804.3224951687.

Adding to 520344113 its reverse (311443025), we get a palindrome (831787138).

The spelling of 520344113 in words is "five hundred twenty million, three hundred forty-four thousand, one hundred thirteen".