5991571 has 2 divisors, whose sum is σ = 5991572. Its totient is φ = 5991570.

The previous prime is 5991563. The next prime is 5991589. The reversal of 5991571 is 1751995.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5991571 - 2³ = 5991563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5991571.

It is not a weakly prime, because it can be changed into another prime (5991541) 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 as a sum of consecutive naturals, namely, 2995785 + 2995786.

It is an arithmetic number, because the mean of its divisors is an integer number (2995786).

Almost surely, 2^5991571 is an apocalyptic number.

5991571 is a deficient number, since it is larger than the sum of its proper divisors (1).

5991571 is an equidigital number, since it uses as much as digits as its factorization.

5991571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14175, while the sum is 37.

The square root of 5991571 is about 2447.7685756623. The cubic root of 5991571 is about 181.6269276862.

The spelling of 5991571 in words is "five million, nine hundred ninety-one thousand, five hundred seventy-one".