27907157 has 2 divisors, whose sum is σ = 27907158. Its totient is φ = 27907156.

The previous prime is 27907151. The next prime is 27907207. The reversal of 27907157 is 75170972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20016676 + 7890481 = 4474^2 + 2809^2 .

It is a cyclic number.

It is not a de Polignac number, because 27907157 - 2⁴ = 27907141 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27907157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27907151) 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, 13953578 + 13953579.

It is an arithmetic number, because the mean of its divisors is an integer number (13953579).

Almost surely, 2^27907157 is an apocalyptic number.

It is an amenable number.

27907157 is a deficient number, since it is larger than the sum of its proper divisors (1).

27907157 is an equidigital number, since it uses as much as digits as its factorization.

27907157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 27907157 is about 5282.7224988636. The cubic root of 27907157 is about 303.3228993177.

The spelling of 27907157 in words is "twenty-seven million, nine hundred seven thousand, one hundred fifty-seven".