171385073 has 16 divisors (see below), whose sum is σ = 186795840. Its totient is φ = 156686400.

The previous prime is 171385069. The next prime is 171385091. The reversal of 171385073 is 370583171.

It is a cyclic number.

It is not a de Polignac number, because 171385073 - 2² = 171385069 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (171385063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91163 + ... + 93023.

It is an arithmetic number, because the mean of its divisors is an integer number (11674740).

Almost surely, 2^171385073 is an apocalyptic number.

It is an amenable number.

171385073 is a deficient number, since it is larger than the sum of its proper divisors (15410767).

171385073 is a wasteful number, since it uses less digits than its factorization.

171385073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 171385073 is about 13091.4121850929. The cubic root of 171385073 is about 555.4662348504.

The spelling of 171385073 in words is "one hundred seventy-one million, three hundred eighty-five thousand, seventy-three".