156861171 has 16 divisors (see below), whose sum is σ = 232581120. Its totient is φ = 104486760.

The previous prime is 156861161. The next prime is 156861179. The reversal of 156861171 is 171168651.

156861171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 156861171 - 2¹⁰ = 156860147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156861179) 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, 56506 + ... + 59216.

It is an arithmetic number, because the mean of its divisors is an integer number (14536320).

Almost surely, 2^156861171 is an apocalyptic number.

156861171 is a deficient number, since it is larger than the sum of its proper divisors (75719949).

156861171 is a wasteful number, since it uses less digits than its factorization.

156861171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4863 (or 4857 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 156861171 is about 12524.4229807205. The cubic root of 156861171 is about 539.3100138058.

The spelling of 156861171 in words is "one hundred fifty-six million, eight hundred sixty-one thousand, one hundred seventy-one".