71111157 has 16 divisors (see below), whose sum is σ = 102368448. Its totient is φ = 43649280.

The previous prime is 71111143. The next prime is 71111189. The reversal of 71111157 is 75111117.

It is not a de Polignac number, because 71111157 - 2¹⁵ = 71078389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71111137) 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, 14782 + ... + 18992.

It is an arithmetic number, because the mean of its divisors is an integer number (6398028).

Almost surely, 2^71111157 is an apocalyptic number.

It is an amenable number.

71111157 is a deficient number, since it is larger than the sum of its proper divisors (31257291).

71111157 is a wasteful number, since it uses less digits than its factorization.

71111157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660.

The product of its digits is 245, while the sum is 24.

The square root of 71111157 is about 8432.7431479916. The cubic root of 71111157 is about 414.2977565776.

The spelling of 71111157 in words is "seventy-one million, one hundred eleven thousand, one hundred fifty-seven".