171157161 has 16 divisors (see below), whose sum is σ = 262477184. Its totient is φ = 97179264.

The previous prime is 171157123. The next prime is 171157163. The reversal of 171157161 is 161751171.

171157161 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 171157161 - 2⁶ = 171157097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171157163) 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, 22660 + ... + 29253.

It is an arithmetic number, because the mean of its divisors is an integer number (16404824).

Almost surely, 2^171157161 is an apocalyptic number.

It is an amenable number.

171157161 is a deficient number, since it is larger than the sum of its proper divisors (91320023).

171157161 is a wasteful number, since it uses less digits than its factorization.

171157161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52080.

The product of its digits is 1470, while the sum is 30.

The square root of 171157161 is about 13082.7046515619. The cubic root of 171157161 is about 555.2199014966.

The spelling of 171157161 in words is "one hundred seventy-one million, one hundred fifty-seven thousand, one hundred sixty-one".