5711891 has 2 divisors, whose sum is σ = 5711892. Its totient is φ = 5711890.

The previous prime is 5711851. The next prime is 5711899. The reversal of 5711891 is 1981175.

5711891 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 a de Polignac number, because none of the positive numbers 2^k-5711891 is a prime.

It is not a weakly prime, because it can be changed into another prime (5711899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2855945 + 2855946.

It is an arithmetic number, because the mean of its divisors is an integer number (2855946).

Almost surely, 2^5711891 is an apocalyptic number.

5711891 is a deficient number, since it is larger than the sum of its proper divisors (1).

5711891 is an equidigital number, since it uses as much as digits as its factorization.

5711891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 32.

The square root of 5711891 is about 2389.9562757507. The cubic root of 5711891 is about 178.7557293549.

The spelling of 5711891 in words is "five million, seven hundred eleven thousand, eight hundred ninety-one".