520057697 has 2 divisors, whose sum is σ = 520057698. Its totient is φ = 520057696.

The previous prime is 520057691. The next prime is 520057709. The reversal of 520057697 is 796750025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313962961 + 206094736 = 17719^2 + 14356^2 .

It is a cyclic number.

It is not a de Polignac number, because 520057697 - 2⁸ = 520057441 is a prime.

It is not a weakly prime, because it can be changed into another prime (520057691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260028848 + 260028849.

It is an arithmetic number, because the mean of its divisors is an integer number (260028849).

Almost surely, 2^520057697 is an apocalyptic number.

It is an amenable number.

520057697 is a deficient number, since it is larger than the sum of its proper divisors (1).

520057697 is an equidigital number, since it uses as much as digits as its factorization.

520057697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 520057697 is about 22804.7735573059. The cubic root of 520057697 is about 804.1748921325.

The spelling of 520057697 in words is "five hundred twenty million, fifty-seven thousand, six hundred ninety-seven".