71045271 has 18 divisors (see below), whose sum is σ = 112799960. Its totient is φ = 43057080.

The previous prime is 71045269. The next prime is 71045287. The reversal of 71045271 is 17254017.

It is not a de Polignac number, because 71045271 - 2¹ = 71045269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71045231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31531 + ... + 33708.

Almost surely, 2^71045271 is an apocalyptic number.

71045271 is a deficient number, since it is larger than the sum of its proper divisors (41754689).

71045271 is a wasteful number, since it uses less digits than its factorization.

71045271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65267 (or 65253 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 71045271 is about 8428.8356847195. The cubic root of 71045271 is about 414.1697651451.

Adding to 71045271 its reverse (17254017), we get a palindrome (88299288).

The spelling of 71045271 in words is "seventy-one million, forty-five thousand, two hundred seventy-one".