27156287 has 2 divisors, whose sum is σ = 27156288. Its totient is φ = 27156286.

The previous prime is 27156281. The next prime is 27156313. The reversal of 27156287 is 78265172.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27156287 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 27156287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27156281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13578143 + 13578144.

It is an arithmetic number, because the mean of its divisors is an integer number (13578144).

Almost surely, 2^27156287 is an apocalyptic number.

27156287 is a deficient number, since it is larger than the sum of its proper divisors (1).

27156287 is an equidigital number, since it uses as much as digits as its factorization.

27156287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 27156287 is about 5211.1694464870. The cubic root of 27156287 is about 300.5777274632.

The spelling of 27156287 in words is "twenty-seven million, one hundred fifty-six thousand, two hundred eighty-seven".