71155158 has 16 divisors (see below), whose sum is σ = 144644016. Its totient is φ = 23329440.

The previous prime is 71155141. The next prime is 71155163. The reversal of 71155158 is 85155117.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96841 + ... + 97572.

It is an arithmetic number, because the mean of its divisors is an integer number (9040251).

Almost surely, 2^71155158 is an apocalyptic number.

71155158 is an abundant number, since it is smaller than the sum of its proper divisors (73488858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71155158 is a wasteful number, since it uses less digits than its factorization.

71155158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194479.

The product of its digits is 7000, while the sum is 33.

The square root of 71155158 is about 8435.3516820581. The cubic root of 71155158 is about 414.3831897583.

The spelling of 71155158 in words is "seventy-one million, one hundred fifty-five thousand, one hundred fifty-eight".