520078811 has 8 divisors (see below), whose sum is σ = 625658880. Its totient is φ = 422319528.

The previous prime is 520078799. The next prime is 520078813. The reversal of 520078811 is 118870025.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520078811 - 2²² = 515884507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520078813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955051 + ... + 1955316.

It is an arithmetic number, because the mean of its divisors is an integer number (78207360).

Almost surely, 2^520078811 is an apocalyptic number.

520078811 is a deficient number, since it is larger than the sum of its proper divisors (105580069).

520078811 is a wasteful number, since it uses less digits than its factorization.

520078811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910393.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 520078811 is about 22805.2364820012. The cubic root of 520078811 is about 804.1857749756.

The spelling of 520078811 in words is "five hundred twenty million, seventy-eight thousand, eight hundred eleven".