520412791 has 4 divisors (see below), whose sum is σ = 520505784. Its totient is φ = 520319800.

The previous prime is 520412773. The next prime is 520412813. The reversal of 520412791 is 197214025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520412791 - 2⁵ = 520412759 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 (520412491) 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, 37525 + ... + 49486.

It is an arithmetic number, because the mean of its divisors is an integer number (130126446).

Almost surely, 2^520412791 is an apocalyptic number.

520412791 is a deficient number, since it is larger than the sum of its proper divisors (92993).

520412791 is an equidigital number, since it uses as much as digits as its factorization.

520412791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92992.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 520412791 is about 22812.5577478721. The cubic root of 520412791 is about 804.3578799771.

The spelling of 520412791 in words is "five hundred twenty million, four hundred twelve thousand, seven hundred ninety-one".