71171157 has 8 divisors (see below), whose sum is σ = 95782176. Its totient is φ = 47003792.

The previous prime is 71171143. The next prime is 71171159. The reversal of 71171157 is 75117117.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71171157 - 2⁴ = 71171141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71171159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110538 + ... + 111179.

It is an arithmetic number, because the mean of its divisors is an integer number (11972772).

Almost surely, 2^71171157 is an apocalyptic number.

It is an amenable number.

71171157 is a deficient number, since it is larger than the sum of its proper divisors (24611019).

71171157 is a wasteful number, since it uses less digits than its factorization.

71171157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221827.

The product of its digits is 1715, while the sum is 30.

The square root of 71171157 is about 8436.2999591053. The cubic root of 71171157 is about 414.4142449903.

The spelling of 71171157 in words is "seventy-one million, one hundred seventy-one thousand, one hundred fifty-seven".