520530697 has 2 divisors, whose sum is σ = 520530698. Its totient is φ = 520530696.

The previous prime is 520530691. The next prime is 520530713. The reversal of 520530697 is 796035025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 517517001 + 3013696 = 22749^2 + 1736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520530697 is a prime.

It is not a weakly prime, because it can be changed into another prime (520530691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260265348 + 260265349.

It is an arithmetic number, because the mean of its divisors is an integer number (260265349).

Almost surely, 2^520530697 is an apocalyptic number.

It is an amenable number.

520530697 is a deficient number, since it is larger than the sum of its proper divisors (1).

520530697 is an equidigital number, since it uses as much as digits as its factorization.

520530697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 520530697 is about 22815.1418360702. The cubic root of 520530697 is about 804.4186211557.

The spelling of 520530697 in words is "five hundred twenty million, five hundred thirty thousand, six hundred ninety-seven".