172244017 has 8 divisors (see below), whose sum is σ = 198955872. Its totient is φ = 147374400.

The previous prime is 172243957. The next prime is 172244047. The reversal of 172244017 is 710442271.

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 172244017 - 2¹¹ = 172241969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172244047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460359 + ... + 460732.

It is an arithmetic number, because the mean of its divisors is an integer number (24869484).

Almost surely, 2^172244017 is an apocalyptic number.

172244017 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

172244017 is a deficient number, since it is larger than the sum of its proper divisors (26711855).

172244017 is a wasteful number, since it uses less digits than its factorization.

172244017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921119.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 172244017 is about 13124.1768122805. The cubic root of 172244017 is about 556.3926467977.

Adding to 172244017 its reverse (710442271), we get a palindrome (882686288).

The spelling of 172244017 in words is "one hundred seventy-two million, two hundred forty-four thousand, seventeen".