173105 has 8 divisors (see below), whose sum is σ = 210600. Its totient is φ = 136576.

The previous prime is 173099. The next prime is 173137. The reversal of 173105 is 501371.

It can be written as a sum of positive squares in 4 ways, for example, as 49 + 173056 = 7^2 + 416^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 173105 - 2⁸ = 172849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251 + ... + 639.

It is an arithmetic number, because the mean of its divisors is an integer number (26325).

2¹⁷³¹⁰⁵ is an apocalyptic number.

It is an amenable number.

173105 is a deficient number, since it is larger than the sum of its proper divisors (37495).

173105 is an equidigital number, since it uses as much as digits as its factorization.

173105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483.

The product of its (nonzero) digits is 105, while the sum is 17.

The square root of 173105 is about 416.0588900625. The cubic root of 173105 is about 55.7318172185.

Adding to 173105 its reverse (501371), we get a palindrome (674476).

The spelling of 173105 in words is "one hundred seventy-three thousand, one hundred five".