520604761 has 2 divisors, whose sum is σ = 520604762. Its totient is φ = 520604760.

The previous prime is 520604737. The next prime is 520604789. The reversal of 520604761 is 167406025.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 405257161 + 115347600 = 20131^2 + 10740^2 .

It is a cyclic number.

It is not a de Polignac number, because 520604761 - 2⁵ = 520604729 is a prime.

It is not a weakly prime, because it can be changed into another prime (520674761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260302380 + 260302381.

It is an arithmetic number, because the mean of its divisors is an integer number (260302381).

Almost surely, 2^520604761 is an apocalyptic number.

It is an amenable number.

520604761 is a deficient number, since it is larger than the sum of its proper divisors (1).

520604761 is an equidigital number, since it uses as much as digits as its factorization.

520604761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 520604761 is about 22816.7649109158. The cubic root of 520604761 is about 804.4567717301.

The spelling of 520604761 in words is "five hundred twenty million, six hundred four thousand, seven hundred sixty-one".