272172173 has 16 divisors (see below), whose sum is σ = 335481216. Its totient is φ = 215023680.

The previous prime is 272172161. The next prime is 272172209. The reversal of 272172173 is 371271272.

It is a cyclic number.

It is not a de Polignac number, because 272172173 - 2¹² = 272168077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272072173) 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, 72890 + ... + 76532.

It is an arithmetic number, because the mean of its divisors is an integer number (20967576).

Almost surely, 2^272172173 is an apocalyptic number.

It is an amenable number.

272172173 is a deficient number, since it is larger than the sum of its proper divisors (63309043).

272172173 is a wasteful number, since it uses less digits than its factorization.

272172173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484.

The product of its digits is 8232, while the sum is 32.

The square root of 272172173 is about 16497.6414374904. The cubic root of 272172173 is about 648.0590406564.

Subtracting 272172173 from its reverse (371271272), we obtain a palindrome (99099099).

The spelling of 272172173 in words is "two hundred seventy-two million, one hundred seventy-two thousand, one hundred seventy-three".