172601223 has 16 divisors (see below), whose sum is σ = 242528256. Its totient is φ = 108970400.

The previous prime is 172601207. The next prime is 172601291. The reversal of 172601223 is 322106271.

It is a cyclic number.

It is not a de Polignac number, because 172601223 - 2⁴ = 172601207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172601193 and 172601202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172601123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5415 + ... + 19352.

It is an arithmetic number, because the mean of its divisors is an integer number (15158016).

Almost surely, 2^172601223 is an apocalyptic number.

172601223 is a deficient number, since it is larger than the sum of its proper divisors (69927033).

172601223 is a wasteful number, since it uses less digits than its factorization.

172601223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24894.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 172601223 is about 13137.7784651744. The cubic root of 172601223 is about 556.7770037580. Note that the first 3 decimals are identical.

Adding to 172601223 its reverse (322106271), we get a palindrome (494707494).

The spelling of 172601223 in words is "one hundred seventy-two million, six hundred one thousand, two hundred twenty-three".