172339163 has 4 divisors (see below), whose sum is σ = 172809120. Its totient is φ = 171869208.

The previous prime is 172339159. The next prime is 172339171. The reversal of 172339163 is 361933271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361933271 = 7 ⋅51704753.

It is a cyclic number.

It is not a de Polignac number, because 172339163 - 2² = 172339159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172329163) 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 3 ways as a sum of consecutive naturals, for example, 234428 + ... + 235161.

It is an arithmetic number, because the mean of its divisors is an integer number (43202280).

Almost surely, 2^172339163 is an apocalyptic number.

172339163 is a deficient number, since it is larger than the sum of its proper divisors (469957).

172339163 is an equidigital number, since it uses as much as digits as its factorization.

172339163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469956.

The product of its digits is 20412, while the sum is 35.

The square root of 172339163 is about 13127.8011487073. The cubic root of 172339163 is about 556.4950766549.

The spelling of 172339163 in words is "one hundred seventy-two million, three hundred thirty-nine thousand, one hundred sixty-three".