5991187 has 2 divisors, whose sum is σ = 5991188. Its totient is φ = 5991186.

The previous prime is 5991169. The next prime is 5991217. The reversal of 5991187 is 7811995.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5991187 - 2⁷ = 5991059 is a prime.

It is not a weakly prime, because it can be changed into another prime (5991107) 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, 2995593 + 2995594.

It is an arithmetic number, because the mean of its divisors is an integer number (2995594).

Almost surely, 2^5991187 is an apocalyptic number.

5991187 is a deficient number, since it is larger than the sum of its proper divisors (1).

5991187 is an equidigital number, since it uses as much as digits as its factorization.

5991187 is an odious number, because the sum of its binary digits is odd.

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

The square root of 5991187 is about 2447.6901356177. The cubic root of 5991187 is about 181.6230474445.

The spelling of 5991187 in words is "five million, nine hundred ninety-one thousand, one hundred eighty-seven".