27766157 has 2 divisors, whose sum is σ = 27766158. Its totient is φ = 27766156.

The previous prime is 27766139. The next prime is 27766159. The reversal of 27766157 is 75166772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25593481 + 2172676 = 5059^2 + 1474^2 .

It is a cyclic number.

It is not a de Polignac number, because 27766157 - 2⁶ = 27766093 is a prime.

Together with 27766159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27766159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13883078 + 13883079.

It is an arithmetic number, because the mean of its divisors is an integer number (13883079).

Almost surely, 2^27766157 is an apocalyptic number.

It is an amenable number.

27766157 is a deficient number, since it is larger than the sum of its proper divisors (1).

27766157 is an equidigital number, since it uses as much as digits as its factorization.

27766157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 123480, while the sum is 41.

The square root of 27766157 is about 5269.3602078431. The cubic root of 27766157 is about 302.8111935388.

The spelling of 27766157 in words is "twenty-seven million, seven hundred sixty-six thousand, one hundred fifty-seven".