5891891 has 6 divisors (see below), whose sum is σ = 6089076. Its totient is φ = 5700900.

The previous prime is 5891867. The next prime is 5891939. The reversal of 5891891 is 1981985.

It is not a de Polignac number, because 5891891 - 2¹⁸ = 5629747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5891491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2105 + ... + 4026.

It is an arithmetic number, because the mean of its divisors is an integer number (1014846).

Almost surely, 2^5891891 is an apocalyptic number.

5891891 is a deficient number, since it is larger than the sum of its proper divisors (197185).

5891891 is an equidigital number, since it uses as much as digits as its factorization.

5891891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6193 (or 6162 counting only the distinct ones).

The product of its digits is 25920, while the sum is 41.

The square root of 5891891 is about 2427.3217751258. The cubic root of 5891891 is about 180.6140653015.

The spelling of 5891891 in words is "five million, eight hundred ninety-one thousand, eight hundred ninety-one".