5691591 has 12 divisors (see below), whose sum is σ = 8334768. Its totient is φ = 3741984.

The previous prime is 5691577. The next prime is 5691601. The reversal of 5691591 is 1951965.

5691591 is a `hidden beast` number, since 5 + 69 + 1 + 591 = 666.

It is not a de Polignac number, because 5691591 - 2⁷ = 5691463 is a prime.

It is a super-2 number, since 2×5691591² = 64788416222562, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5691541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3675 + ... + 4988.

It is an arithmetic number, because the mean of its divisors is an integer number (694564).

Almost surely, 2^5691591 is an apocalyptic number.

5691591 is a deficient number, since it is larger than the sum of its proper divisors (2643177).

5691591 is a wasteful number, since it uses less digits than its factorization.

5691591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8742 (or 8739 counting only the distinct ones).

The product of its digits is 12150, while the sum is 36.

The square root of 5691591 is about 2385.7055560148. The cubic root of 5691591 is about 178.5437126661.

The spelling of 5691591 in words is "five million, six hundred ninety-one thousand, five hundred ninety-one".