172173333 has 12 divisors (see below), whose sum is σ = 235034880. Its totient is φ = 112109256.

The previous prime is 172173299. The next prime is 172173341. The reversal of 172173333 is 333371271.

It is not a de Polignac number, because 172173333 - 2¹⁴ = 172156949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172173333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172173343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9973 + ... + 21066.

It is an arithmetic number, because the mean of its divisors is an integer number (19586240).

Almost surely, 2^172173333 is an apocalyptic number.

It is an amenable number.

172173333 is a deficient number, since it is larger than the sum of its proper divisors (62861547).

172173333 is an equidigital number, since it uses as much as digits as its factorization.

172173333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31128 (or 31085 counting only the distinct ones).

The product of its digits is 7938, while the sum is 30.

The square root of 172173333 is about 13121.4836432471. The cubic root of 172173333 is about 556.3165271944.

Adding to 172173333 its product of digits (7938), we get a palindrome (172181271).

The spelling of 172173333 in words is "one hundred seventy-two million, one hundred seventy-three thousand, three hundred thirty-three".