520704001 has 2 divisors, whose sum is σ = 520704002. Its totient is φ = 520704000.

The previous prime is 520703971. The next prime is 520704013. The reversal of 520704001 is 100407025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 520524225 + 179776 = 22815^2 + 424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520704001 is a prime.

It is a super-2 number, since 2×520704001² = 542265313314816002, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520704001.

It is not a weakly prime, because it can be changed into another prime (520714001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260352000 + 260352001.

It is an arithmetic number, because the mean of its divisors is an integer number (260352001).

Almost surely, 2^520704001 is an apocalyptic number.

It is an amenable number.

520704001 is a deficient number, since it is larger than the sum of its proper divisors (1).

520704001 is an equidigital number, since it uses as much as digits as its factorization.

520704001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 520704001 is about 22818.9395240007. The cubic root of 520704001 is about 804.5078848609.

The spelling of 520704001 in words is "five hundred twenty million, seven hundred four thousand, one".