27995171 has 2 divisors, whose sum is σ = 27995172. Its totient is φ = 27995170.

The previous prime is 27995111. The next prime is 27995203. The reversal of 27995171 is 17159972.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27995171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27995101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13997585 + 13997586.

It is an arithmetic number, because the mean of its divisors is an integer number (13997586).

Almost surely, 2^27995171 is an apocalyptic number.

27995171 is a deficient number, since it is larger than the sum of its proper divisors (1).

27995171 is an equidigital number, since it uses as much as digits as its factorization.

27995171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 41.

The square root of 27995171 is about 5291.0463048437. The cubic root of 27995171 is about 303.6414394123.

The spelling of 27995171 in words is "twenty-seven million, nine hundred ninety-five thousand, one hundred seventy-one".