71540271 has 24 divisors (see below), whose sum is σ = 113218560. Its totient is φ = 43170000.

The previous prime is 71540237. The next prime is 71540299. The reversal of 71540271 is 17204517.

It is not a de Polignac number, because 71540271 - 2⁶ = 71540207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71540201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23410 + ... + 26288.

It is an arithmetic number, because the mean of its divisors is an integer number (4717440).

Almost surely, 2^71540271 is an apocalyptic number.

71540271 is a deficient number, since it is larger than the sum of its proper divisors (41678289).

71540271 is a wasteful number, since it uses less digits than its factorization.

71540271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147 (or 3144 counting only the distinct ones).

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

The square root of 71540271 is about 8458.1482015864. The cubic root of 71540271 is about 415.1294336677.

Adding to 71540271 its reverse (17204517), we get a palindrome (88744788).

The spelling of 71540271 in words is "seventy-one million, five hundred forty thousand, two hundred seventy-one".