520326073 has 2 divisors, whose sum is σ = 520326074. Its totient is φ = 520326072.

The previous prime is 520326017. The next prime is 520326167. The reversal of 520326073 is 370623025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 496977849 + 23348224 = 22293^2 + 4832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520326073 is a prime.

It is not a weakly prime, because it can be changed into another prime (520326013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260163036 + 260163037.

It is an arithmetic number, because the mean of its divisors is an integer number (260163037).

Almost surely, 2^520326073 is an apocalyptic number.

It is an amenable number.

520326073 is a deficient number, since it is larger than the sum of its proper divisors (1).

520326073 is an equidigital number, since it uses as much as digits as its factorization.

520326073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 520326073 is about 22810.6570050054. The cubic root of 520326073 is about 804.3131999445.

Adding to 520326073 its reverse (370623025), we get a palindrome (890949098).

The spelling of 520326073 in words is "five hundred twenty million, three hundred twenty-six thousand, seventy-three".