173166161 has 8 divisors (see below), whose sum is σ = 199233600. Its totient is φ = 147431088.

The previous prime is 173166127. The next prime is 173166181. The reversal of 173166161 is 161661371.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-173166161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173166181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81971 + ... + 84056.

It is an arithmetic number, because the mean of its divisors is an integer number (24904200).

Almost surely, 2^173166161 is an apocalyptic number.

It is an amenable number.

173166161 is a deficient number, since it is larger than the sum of its proper divisors (26067439).

173166161 is a wasteful number, since it uses less digits than its factorization.

173166161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166183.

The product of its digits is 4536, while the sum is 32.

The square root of 173166161 is about 13159.2614154443. The cubic root of 173166161 is about 557.3838011829.

The spelling of 173166161 in words is "one hundred seventy-three million, one hundred sixty-six thousand, one hundred sixty-one".