27000971 has 2 divisors, whose sum is σ = 27000972. Its totient is φ = 27000970.

The previous prime is 27000959. The next prime is 27000973. The reversal of 27000971 is 17900072.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27000971 is a prime.

Together with 27000973, it forms a pair of twin primes.

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 27000971.

It is not a weakly prime, because it can be changed into another prime (27000973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13500485 + 13500486.

It is an arithmetic number, because the mean of its divisors is an integer number (13500486).

Almost surely, 2^27000971 is an apocalyptic number.

27000971 is a deficient number, since it is larger than the sum of its proper divisors (1).

27000971 is an equidigital number, since it uses as much as digits as its factorization.

27000971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 27000971 is about 5196.2458563852. The cubic root of 27000971 is about 300.0035962532.

The spelling of 27000971 in words is "twenty-seven million, nine hundred seventy-one", and thus it is an aban number.