172207101 has 8 divisors (see below), whose sum is σ = 250483104. Its totient is φ = 104367920.

The previous prime is 172207097. The next prime is 172207111. The reversal of 172207101 is 101702271.

It is a happy number.

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 172207101 - 2² = 172207097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172207111) 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 7 ways as a sum of consecutive naturals, for example, 2609166 + ... + 2609231.

It is an arithmetic number, because the mean of its divisors is an integer number (31310388).

Almost surely, 2^172207101 is an apocalyptic number.

172207101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

172207101 is a deficient number, since it is larger than the sum of its proper divisors (78276003).

172207101 is a wasteful number, since it uses less digits than its factorization.

172207101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218411.

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 172207101 is about 13122.7703248971. The cubic root of 172207101 is about 556.3528945538.

Adding to 172207101 its reverse (101702271), we get a palindrome (273909372).

The spelling of 172207101 in words is "one hundred seventy-two million, two hundred seven thousand, one hundred one".