27012157 has 2 divisors, whose sum is σ = 27012158. Its totient is φ = 27012156.

The previous prime is 27012151. The next prime is 27012179. The reversal of 27012157 is 75121072.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26925721 + 86436 = 5189^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 27012157 - 2³ = 27012149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27012151) 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, 13506078 + 13506079.

It is an arithmetic number, because the mean of its divisors is an integer number (13506079).

Almost surely, 2^27012157 is an apocalyptic number.

It is an amenable number.

27012157 is a deficient number, since it is larger than the sum of its proper divisors (1).

27012157 is an equidigital number, since it uses as much as digits as its factorization.

27012157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 27012157 is about 5197.3220989275. The cubic root of 27012157 is about 300.0450191698.

The spelling of 27012157 in words is "twenty-seven million, twelve thousand, one hundred fifty-seven".