27845791 has 2 divisors, whose sum is σ = 27845792. Its totient is φ = 27845790.

The previous prime is 27845743. The next prime is 27845837. The reversal of 27845791 is 19754872.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27845791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27855791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13922895 + 13922896.

It is an arithmetic number, because the mean of its divisors is an integer number (13922896).

Almost surely, 2^27845791 is an apocalyptic number.

27845791 is a deficient number, since it is larger than the sum of its proper divisors (1).

27845791 is an equidigital number, since it uses as much as digits as its factorization.

27845791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 43.

The square root of 27845791 is about 5276.9111229961. The cubic root of 27845791 is about 303.1004071308.

The spelling of 27845791 in words is "twenty-seven million, eight hundred forty-five thousand, seven hundred ninety-one".