520604893 has 2 divisors, whose sum is σ = 520604894. Its totient is φ = 520604892.

The previous prime is 520604891. The next prime is 520604939. The reversal of 520604893 is 398406025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 397882809 + 122722084 = 19947^2 + 11078^2 .

It is a cyclic number.

It is not a de Polignac number, because 520604893 - 2¹ = 520604891 is a prime.

Together with 520604891, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520604891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260302446 + 260302447.

It is an arithmetic number, because the mean of its divisors is an integer number (260302447).

Almost surely, 2^520604893 is an apocalyptic number.

It is an amenable number.

520604893 is a deficient number, since it is larger than the sum of its proper divisors (1).

520604893 is an equidigital number, since it uses as much as digits as its factorization.

520604893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 520604893 is about 22816.7678035255. The cubic root of 520604893 is about 804.4568397204.

It can be divided in two parts, 52060 and 4893, that added together give a triangular number (56953 = T₃₃₇).

The spelling of 520604893 in words is "five hundred twenty million, six hundred four thousand, eight hundred ninety-three".