172055185 has 8 divisors (see below), whose sum is σ = 206571456. Its totient is φ = 137574000.

The previous prime is 172055183. The next prime is 172055209. The reversal of 172055185 is 581550271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172055185 - 2¹ = 172055183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172055185.

It is not an unprimeable number, because it can be changed into a prime (172055183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3612 + ... + 18898.

It is an arithmetic number, because the mean of its divisors is an integer number (25821432).

Almost surely, 2^172055185 is an apocalyptic number.

It is an amenable number.

172055185 is a deficient number, since it is larger than the sum of its proper divisors (34516271).

172055185 is a wasteful number, since it uses less digits than its factorization.

172055185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17543.

The product of its (nonzero) digits is 14000, while the sum is 34.

The square root of 172055185 is about 13116.9807882759. The cubic root of 172055185 is about 556.1892470786.

The spelling of 172055185 in words is "one hundred seventy-two million, fifty-five thousand, one hundred eighty-five".