520743101 has 2 divisors, whose sum is σ = 520743102. Its totient is φ = 520743100.

The previous prime is 520743049. The next prime is 520743121. The reversal of 520743101 is 101347025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 518655076 + 2088025 = 22774^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 520743101 - 2⁶ = 520743037 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520743121) 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, 260371550 + 260371551.

It is an arithmetic number, because the mean of its divisors is an integer number (260371551).

Almost surely, 2^520743101 is an apocalyptic number.

It is an amenable number.

520743101 is a deficient number, since it is larger than the sum of its proper divisors (1).

520743101 is an equidigital number, since it uses as much as digits as its factorization.

520743101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 520743101 is about 22819.7962523770. The cubic root of 520743101 is about 804.5280213626.

The spelling of 520743101 in words is "five hundred twenty million, seven hundred forty-three thousand, one hundred one".