173128045 has 8 divisors (see below), whose sum is σ = 208432224. Its totient is φ = 138050064.

The previous prime is 173128027. The next prime is 173128063. The reversal of 173128045 is 540821371.

It is an interprime number because it is at equal distance from previous prime (173128027) and next prime (173128063).

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 173128045 - 2⁷ = 173127917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 173127998 and 173128016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54859 + ... + 57928.

It is an arithmetic number, because the mean of its divisors is an integer number (26054028).

Almost surely, 2^173128045 is an apocalyptic number.

It is an amenable number.

173128045 is a deficient number, since it is larger than the sum of its proper divisors (35304179).

173128045 is a wasteful number, since it uses less digits than its factorization.

173128045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113099.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 173128045 is about 13157.8130781677. The cubic root of 173128045 is about 557.3429025073.

The spelling of 173128045 in words is "one hundred seventy-three million, one hundred twenty-eight thousand, forty-five".