172008203 has 6 divisors (see below), whose sum is σ = 175748076. Its totient is φ = 168346292.

The previous prime is 172008173. The next prime is 172008209. The reversal of 172008203 is 302800271.

It is not a de Polignac number, because 172008203 - 2⁶ = 172008139 is a prime.

It is a super-3 number, since 3×172008203³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172008209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36725 + ... + 41142.

It is an arithmetic number, because the mean of its divisors is an integer number (29291346).

Almost surely, 2^172008203 is an apocalyptic number.

172008203 is a deficient number, since it is larger than the sum of its proper divisors (3739873).

172008203 is an frugal number, since it uses more digits than its factorization.

172008203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77961 (or 77914 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 172008203 is about 13115.1897813185. The cubic root of 172008203 is about 556.1386174661.

Adding to 172008203 its reverse (302800271), we get a palindrome (474808474).

The spelling of 172008203 in words is "one hundred seventy-two million, eight thousand, two hundred three".