520075613 has 2 divisors, whose sum is σ = 520075614. Its totient is φ = 520075612.

The previous prime is 520075603. The next prime is 520075631. The reversal of 520075613 is 316570025.

Together with next prime (520075631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391525369 + 128550244 = 19787^2 + 11338^2 .

It is a cyclic number.

It is not a de Polignac number, because 520075613 - 2¹⁶ = 520010077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520075603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260037806 + 260037807.

It is an arithmetic number, because the mean of its divisors is an integer number (260037807).

Almost surely, 2^520075613 is an apocalyptic number.

It is an amenable number.

520075613 is a deficient number, since it is larger than the sum of its proper divisors (1).

520075613 is an equidigital number, since it uses as much as digits as its factorization.

520075613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 520075613 is about 22805.1663664179. The cubic root of 520075613 is about 804.1841266412.

The spelling of 520075613 in words is "five hundred twenty million, seventy-five thousand, six hundred thirteen".