500720791 has 2 divisors, whose sum is σ = 500720792. Its totient is φ = 500720790.

The previous prime is 500720789. The next prime is 500720807. The reversal of 500720791 is 197027005.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 500720791 - 2¹ = 500720789 is a prime.

Together with 500720789, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500720761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250360395 + 250360396.

It is an arithmetic number, because the mean of its divisors is an integer number (250360396).

Almost surely, 2^500720791 is an apocalyptic number.

500720791 is a deficient number, since it is larger than the sum of its proper divisors (1).

500720791 is an equidigital number, since it uses as much as digits as its factorization.

500720791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 500720791 is about 22376.7913472866. The cubic root of 500720791 is about 794.0817376573.

Adding to 500720791 its reverse (197027005), we get a palindrome (697747796).

The spelling of 500720791 in words is "five hundred million, seven hundred twenty thousand, seven hundred ninety-one".