71255171 has 16 divisors (see below), whose sum is σ = 80461920. Its totient is φ = 62657280.

The previous prime is 71255167. The next prime is 71255179. The reversal of 71255171 is 17155217.

It is a cyclic number.

It is not a de Polignac number, because 71255171 - 2² = 71255167 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71255179) 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, 21365 + ... + 24473.

It is an arithmetic number, because the mean of its divisors is an integer number (5028870).

Almost surely, 2^71255171 is an apocalyptic number.

71255171 is a deficient number, since it is larger than the sum of its proper divisors (9206749).

71255171 is a wasteful number, since it uses less digits than its factorization.

71255171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206.

The product of its digits is 2450, while the sum is 29.

The square root of 71255171 is about 8441.2778061144. The cubic root of 71255171 is about 414.5772459824.

The spelling of 71255171 in words is "seventy-one million, two hundred fifty-five thousand, one hundred seventy-one".