5891591 has 4 divisors (see below), whose sum is σ = 6016992. Its totient is φ = 5766192.

The previous prime is 5891579. The next prime is 5891597. The reversal of 5891591 is 1951985.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5891591 - 2²² = 1697287 is a prime.

It is a super-2 number, since 2×5891591² = 69421689022562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5891597) 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, 62630 + ... + 62723.

It is an arithmetic number, because the mean of its divisors is an integer number (1504248).

Almost surely, 2^5891591 is an apocalyptic number.

5891591 is a deficient number, since it is larger than the sum of its proper divisors (125401).

5891591 is a wasteful number, since it uses less digits than its factorization.

5891591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125400.

The product of its digits is 16200, while the sum is 38.

The square root of 5891591 is about 2427.2599778351. The cubic root of 5891591 is about 180.6109997809.

The spelling of 5891591 in words is "five million, eight hundred ninety-one thousand, five hundred ninety-one".