161065171 has 4 divisors (see below), whose sum is σ = 161109000. Its totient is φ = 161021344.

The previous prime is 161065153. The next prime is 161065183. The reversal of 161065171 is 171560161.

161065171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161065171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161065111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15841 + ... + 23938.

It is an arithmetic number, because the mean of its divisors is an integer number (40277250).

Almost surely, 2^161065171 is an apocalyptic number.

161065171 is a deficient number, since it is larger than the sum of its proper divisors (43829).

161065171 is an equidigital number, since it uses as much as digits as its factorization.

161065171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43828.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 161065171 is about 12691.1453777821. The cubic root of 161065171 is about 544.0855759892.

The spelling of 161065171 in words is "one hundred sixty-one million, sixty-five thousand, one hundred seventy-one".