27113191 has 4 divisors (see below), whose sum is σ = 30986512. Its totient is φ = 23239872.

The previous prime is 27113183. The next prime is 27113197. The reversal of 27113191 is 19131172.

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 27113191 - 2³ = 27113183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27113197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936650 + ... + 1936663.

It is an arithmetic number, because the mean of its divisors is an integer number (7746628).

Almost surely, 2^27113191 is an apocalyptic number.

27113191 is a deficient number, since it is larger than the sum of its proper divisors (3873321).

27113191 is an equidigital number, since it uses as much as digits as its factorization.

27113191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873320.

The product of its digits is 378, while the sum is 25.

The square root of 27113191 is about 5207.0328403036. The cubic root of 27113191 is about 300.4186414520.

The spelling of 27113191 in words is "twenty-seven million, one hundred thirteen thousand, one hundred ninety-one".