5891791 has 4 divisors (see below), whose sum is σ = 5896800. Its totient is φ = 5886784.

The previous prime is 5891789. The next prime is 5891797. The reversal of 5891791 is 1971985.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5891791 - 2¹ = 5891789 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5891797) 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, 330 + ... + 3448.

It is an arithmetic number, because the mean of its divisors is an integer number (1474200).

Almost surely, 2^5891791 is an apocalyptic number.

5891791 is a deficient number, since it is larger than the sum of its proper divisors (5009).

5891791 is a wasteful number, since it uses less digits than its factorization.

5891791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008.

The product of its digits is 22680, while the sum is 40.

The square root of 5891791 is about 2427.3011762037. The cubic root of 5891791 is about 180.6130434729.

The spelling of 5891791 in words is "five million, eight hundred ninety-one thousand, seven hundred ninety-one".