5781791 has 2 divisors, whose sum is σ = 5781792. Its totient is φ = 5781790.

The previous prime is 5781749. The next prime is 5781793. The reversal of 5781791 is 1971875.

5781791 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5781791 - 2¹⁴ = 5765407 is a prime.

It is a Sophie Germain prime.

Together with 5781793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5781793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2890895 + 2890896.

It is an arithmetic number, because the mean of its divisors is an integer number (2890896).

Almost surely, 2^5781791 is an apocalyptic number.

5781791 is a deficient number, since it is larger than the sum of its proper divisors (1).

5781791 is an equidigital number, since it uses as much as digits as its factorization.

5781791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 38.

The square root of 5781791 is about 2404.5355060801. The cubic root of 5781791 is about 179.4819569960.

The spelling of 5781791 in words is "five million, seven hundred eighty-one thousand, seven hundred ninety-one".