171728151 has 16 divisors (see below), whose sum is σ = 262099200. Its totient is φ = 97973568.

The previous prime is 171728107. The next prime is 171728153. The reversal of 171728151 is 151827171.

It is not a de Polignac number, because 171728151 - 2¹³ = 171719959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171728153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7635 + ... + 20043.

It is an arithmetic number, because the mean of its divisors is an integer number (16381200).

Almost surely, 2^171728151 is an apocalyptic number.

171728151 is a deficient number, since it is larger than the sum of its proper divisors (90371049).

171728151 is a wasteful number, since it uses less digits than its factorization.

171728151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13078.

The product of its digits is 3920, while the sum is 33.

The square root of 171728151 is about 13104.5088042246. The cubic root of 171728151 is about 555.8366312200.

The spelling of 171728151 in words is "one hundred seventy-one million, seven hundred twenty-eight thousand, one hundred fifty-one".