520308073 has 2 divisors, whose sum is σ = 520308074. Its totient is φ = 520308072.

The previous prime is 520308067. The next prime is 520308083. The reversal of 520308073 is 370803025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515607849 + 4700224 = 22707^2 + 2168^2 .

It is a cyclic number.

It is not a de Polignac number, because 520308073 - 2⁹ = 520307561 is a prime.

It is not a weakly prime, because it can be changed into another prime (520308013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260154036 + 260154037.

It is an arithmetic number, because the mean of its divisors is an integer number (260154037).

Almost surely, 2^520308073 is an apocalyptic number.

It is an amenable number.

520308073 is a deficient number, since it is larger than the sum of its proper divisors (1).

520308073 is an equidigital number, since it uses as much as digits as its factorization.

520308073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 520308073 is about 22810.2624491697. The cubic root of 520308073 is about 804.3039251165.

The spelling of 520308073 in words is "five hundred twenty million, three hundred eight thousand, seventy-three".