520199773 has 4 divisors (see below), whose sum is σ = 520245628. Its totient is φ = 520153920.

The previous prime is 520199741. The next prime is 520199789. The reversal of 520199773 is 377991025.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 311628409 + 208571364 = 17653^2 + 14442^2 .

It is a cyclic number.

It is not a de Polignac number, because 520199773 - 2⁵ = 520199741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520199723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7963 + ... + 33223.

It is an arithmetic number, because the mean of its divisors is an integer number (130061407).

Almost surely, 2^520199773 is an apocalyptic number.

It is an amenable number.

520199773 is a deficient number, since it is larger than the sum of its proper divisors (45855).

520199773 is a wasteful number, since it uses less digits than its factorization.

520199773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45854.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 520199773 is about 22807.8883941500. Note that the first 3 decimals coincide. The cubic root of 520199773 is about 804.2481170521.

The spelling of 520199773 in words is "five hundred twenty million, one hundred ninety-nine thousand, seven hundred seventy-three".