27759157 has 2 divisors, whose sum is σ = 27759158. Its totient is φ = 27759156.

The previous prime is 27759131. The next prime is 27759161. The reversal of 27759157 is 75195772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19412836 + 8346321 = 4406^2 + 2889^2 .

It is a cyclic number.

It is not a de Polignac number, because 27759157 - 2⁷ = 27759029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27159157) 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, 13879578 + 13879579.

It is an arithmetic number, because the mean of its divisors is an integer number (13879579).

Almost surely, 2^27759157 is an apocalyptic number.

It is an amenable number.

27759157 is a deficient number, since it is larger than the sum of its proper divisors (1).

27759157 is an equidigital number, since it uses as much as digits as its factorization.

27759157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 154350, while the sum is 43.

The square root of 27759157 is about 5268.6959487144. The cubic root of 27759157 is about 302.7857446142.

The spelling of 27759157 in words is "twenty-seven million, seven hundred fifty-nine thousand, one hundred fifty-seven".