173056109 has 8 divisors (see below), whose sum is σ = 176988768. Its totient is φ = 169163280.

The previous prime is 173056099. The next prime is 173056111. The reversal of 173056109 is 901650371.

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 173056109 - 2⁸ = 173055853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173056409) 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 7 ways as a sum of consecutive naturals, for example, 1082 + ... + 18635.

It is an arithmetic number, because the mean of its divisors is an integer number (22123596).

Almost surely, 2^173056109 is an apocalyptic number.

It is an amenable number.

173056109 is a deficient number, since it is larger than the sum of its proper divisors (3932659).

173056109 is a wasteful number, since it uses less digits than its factorization.

173056109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19915.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 173056109 is about 13155.0792091876. The cubic root of 173056109 is about 557.2656984292.

The spelling of 173056109 in words is "one hundred seventy-three million, fifty-six thousand, one hundred nine".