172422717 has 8 divisors (see below), whose sum is σ = 229986624. Its totient is φ = 114903648.

The previous prime is 172422709. The next prime is 172422769. The reversal of 172422717 is 717224271.

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

It is not a de Polignac number, because 172422717 - 2³ = 172422709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172422787) 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, 873 + ... + 18590.

It is an arithmetic number, because the mean of its divisors is an integer number (28748328).

Almost surely, 2^172422717 is an apocalyptic number.

It is an amenable number.

172422717 is a deficient number, since it is larger than the sum of its proper divisors (57563907).

172422717 is a wasteful number, since it uses less digits than its factorization.

172422717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22419.

The product of its digits is 10976, while the sum is 33.

The square root of 172422717 is about 13130.9830934321. The cubic root of 172422717 is about 556.5849960064.

Adding to 172422717 its reverse (717224271), we get a palindrome (889646988).

The spelling of 172422717 in words is "one hundred seventy-two million, four hundred twenty-two thousand, seven hundred seventeen".