171372243 has 32 divisors (see below), whose sum is σ = 269001216. Its totient is φ = 95010048.

The previous prime is 171372221. The next prime is 171372263. The reversal of 171372243 is 342273171.

It is not a de Polignac number, because 171372243 - 2⁵ = 171372211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 171372243.

It is not an unprimeable number, because it can be changed into a prime (171372263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155671 + ... + 156767.

It is an arithmetic number, because the mean of its divisors is an integer number (8406288).

Almost surely, 2^171372243 is an apocalyptic number.

171372243 is a deficient number, since it is larger than the sum of its proper divisors (97628973).

171372243 is a wasteful number, since it uses less digits than its factorization.

171372243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323.

The product of its digits is 7056, while the sum is 30.

The square root of 171372243 is about 13090.9221600314. The cubic root of 171372243 is about 555.4523736478.

The spelling of 171372243 in words is "one hundred seventy-one million, three hundred seventy-two thousand, two hundred forty-three".