173030161 has 4 divisors (see below), whose sum is σ = 173135872. Its totient is φ = 172924452.

The previous prime is 173030149. The next prime is 173030201. The reversal of 173030161 is 161030371.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161030371 = 557 ⋅289103.

It is a cyclic number.

It is not a de Polignac number, because 173030161 - 2⁵ = 173030129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173030101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50361 + ... + 53686.

It is an arithmetic number, because the mean of its divisors is an integer number (43283968).

Almost surely, 2^173030161 is an apocalyptic number.

It is an amenable number.

173030161 is a deficient number, since it is larger than the sum of its proper divisors (105711).

173030161 is a wasteful number, since it uses less digits than its factorization.

173030161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105710.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 173030161 is about 13154.0929371812. The cubic root of 173030161 is about 557.2378449329.

The spelling of 173030161 in words is "one hundred seventy-three million, thirty thousand, one hundred sixty-one".