71047271 has 2 divisors, whose sum is σ = 71047272. Its totient is φ = 71047270.

The previous prime is 71047259. The next prime is 71047279. The reversal of 71047271 is 17274017.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71047271 - 2¹⁴ = 71030887 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71047279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35523635 + 35523636.

It is an arithmetic number, because the mean of its divisors is an integer number (35523636).

Almost surely, 2^71047271 is an apocalyptic number.

71047271 is a deficient number, since it is larger than the sum of its proper divisors (1).

71047271 is an equidigital number, since it uses as much as digits as its factorization.

71047271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 71047271 is about 8428.9543242326. The cubic root of 71047271 is about 414.1736515485.

The spelling of 71047271 in words is "seventy-one million, forty-seven thousand, two hundred seventy-one".