71447271 has 16 divisors (see below), whose sum is σ = 112627200. Its totient is φ = 39418848.

The previous prime is 71447267. The next prime is 71447273. The reversal of 71447271 is 17274417.

It is not a de Polignac number, because 71447271 - 2² = 71447267 is a prime.

It is a super-3 number, since 3×71447271³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71447273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58051 + ... + 59268.

It is an arithmetic number, because the mean of its divisors is an integer number (7039200).

Almost surely, 2^71447271 is an apocalyptic number.

71447271 is a deficient number, since it is larger than the sum of its proper divisors (41179929).

71447271 is a wasteful number, since it uses less digits than its factorization.

71447271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117358.

The product of its digits is 10976, while the sum is 33.

The square root of 71447271 is about 8452.6487564550. The cubic root of 71447271 is about 414.9494707919.

The spelling of 71447271 in words is "seventy-one million, four hundred forty-seven thousand, two hundred seventy-one".