520575197 has 2 divisors, whose sum is σ = 520575198. Its totient is φ = 520575196.

The previous prime is 520575137. The next prime is 520575247. The reversal of 520575197 is 791575025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367335556 + 153239641 = 19166^2 + 12379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520575197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520575127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260287598 + 260287599.

It is an arithmetic number, because the mean of its divisors is an integer number (260287599).

Almost surely, 2^520575197 is an apocalyptic number.

It is an amenable number.

520575197 is a deficient number, since it is larger than the sum of its proper divisors (1).

520575197 is an equidigital number, since it uses as much as digits as its factorization.

520575197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110250, while the sum is 41.

The square root of 520575197 is about 22816.1170447559. The cubic root of 520575197 is about 804.4415436646.

The spelling of 520575197 in words is "five hundred twenty million, five hundred seventy-five thousand, one hundred ninety-seven".