27345971 has 2 divisors, whose sum is σ = 27345972. Its totient is φ = 27345970.

The previous prime is 27345943. The next prime is 27345991. The reversal of 27345971 is 17954372.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27345971 - 2⁶ = 27345907 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27345931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13672985 + 13672986.

It is an arithmetic number, because the mean of its divisors is an integer number (13672986).

Almost surely, 2^27345971 is an apocalyptic number.

27345971 is a deficient number, since it is larger than the sum of its proper divisors (1).

27345971 is an equidigital number, since it uses as much as digits as its factorization.

27345971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 27345971 is about 5229.3375297450. The cubic root of 27345971 is about 301.2759396406.

The spelling of 27345971 in words is "twenty-seven million, three hundred forty-five thousand, nine hundred seventy-one".