172045163 has 4 divisors (see below), whose sum is σ = 172680288. Its totient is φ = 171410040.

The previous prime is 172045157. The next prime is 172045177. The reversal of 172045163 is 361540271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172045163 - 2⁴ = 172045147 is a prime.

It is a super-2 number, since 2×172045163² = 59199076223393138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172045063) 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 3 ways as a sum of consecutive naturals, for example, 317156 + ... + 317697.

It is an arithmetic number, because the mean of its divisors is an integer number (43170072).

Almost surely, 2^172045163 is an apocalyptic number.

172045163 is a deficient number, since it is larger than the sum of its proper divisors (635125).

172045163 is an equidigital number, since it uses as much as digits as its factorization.

172045163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635124.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 172045163 is about 13116.5987588246. The cubic root of 172045163 is about 556.1784477589.

The spelling of 172045163 in words is "one hundred seventy-two million, forty-five thousand, one hundred sixty-three".