172206103 has 8 divisors (see below), whose sum is σ = 177889248. Its totient is φ = 166577184.

The previous prime is 172206071. The next prime is 172206113. The reversal of 172206103 is 301602271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172206103 - 2⁵ = 172206071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172206113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7051 + ... + 19852.

It is an arithmetic number, because the mean of its divisors is an integer number (22236156).

Almost surely, 2^172206103 is an apocalyptic number.

172206103 is a deficient number, since it is larger than the sum of its proper divisors (5683145).

172206103 is a wasteful number, since it uses less digits than its factorization.

172206103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27113.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 172206103 is about 13122.7322993346. The cubic root of 172206103 is about 556.3518197990.

Adding to 172206103 its reverse (301602271), we get a palindrome (473808374).

The spelling of 172206103 in words is "one hundred seventy-two million, two hundred six thousand, one hundred three".