172822345 has 16 divisors (see below), whose sum is σ = 216950400. Its totient is φ = 131912704.

The previous prime is 172822259. The next prime is 172822379. The reversal of 172822345 is 543228271.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 172822345 - 2⁹ = 172821833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172822345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49962 + ... + 53308.

It is an arithmetic number, because the mean of its divisors is an integer number (13559400).

Almost surely, 2^172822345 is an apocalyptic number.

It is an amenable number.

172822345 is a deficient number, since it is larger than the sum of its proper divisors (44128055).

172822345 is a wasteful number, since it uses less digits than its factorization.

172822345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3824.

The product of its digits is 26880, while the sum is 34.

The square root of 172822345 is about 13146.1912735210. The cubic root of 172822345 is about 557.0146674021.

The spelling of 172822345 in words is "one hundred seventy-two million, eight hundred twenty-two thousand, three hundred forty-five".