172427163 has 4 divisors (see below), whose sum is σ = 229902888. Its totient is φ = 114951440.

The previous prime is 172427131. The next prime is 172427173. The reversal of 172427163 is 361724271.

172427163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 172427163 - 2⁵ = 172427131 is a prime.

It is a super-2 number, since 2×172427163² = 59462253080457138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172427173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28737858 + ... + 28737863.

It is an arithmetic number, because the mean of its divisors is an integer number (57475722).

Almost surely, 2^172427163 is an apocalyptic number.

172427163 is a deficient number, since it is larger than the sum of its proper divisors (57475725).

172427163 is an equidigital number, since it uses as much as digits as its factorization.

172427163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57475724.

The product of its digits is 14112, while the sum is 33.

The square root of 172427163 is about 13131.1523865958. The cubic root of 172427163 is about 556.5897798997.

The spelling of 172427163 in words is "one hundred seventy-two million, four hundred twenty-seven thousand, one hundred sixty-three".