71855271 has 6 divisors (see below), whose sum is σ = 103790960. Its totient is φ = 47903508.

The previous prime is 71855249. The next prime is 71855281. The reversal of 71855271 is 17255817.

It is not a de Polignac number, because 71855271 - 2⁵ = 71855239 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 (71855281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3991951 + ... + 3991968.

Almost surely, 2^71855271 is an apocalyptic number.

71855271 is a deficient number, since it is larger than the sum of its proper divisors (31935689).

71855271 is a wasteful number, since it uses less digits than its factorization.

71855271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7983925 (or 7983922 counting only the distinct ones).

The product of its digits is 19600, while the sum is 36.

The square root of 71855271 is about 8476.7488461084. The cubic root of 71855271 is about 415.7378290620.

The spelling of 71855271 in words is "seventy-one million, eight hundred fifty-five thousand, two hundred seventy-one".