171225609 has 8 divisors (see below), whose sum is σ = 228438912. Its totient is φ = 114081360.

The previous prime is 171225583. The next prime is 171225629. The reversal of 171225609 is 906522171.

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

It is not a de Polignac number, because 171225609 - 2⁵ = 171225577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 171225609.

It is not an unprimeable number, because it can be changed into a prime (171225629) 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, 11169 + ... + 21614.

It is an arithmetic number, because the mean of its divisors is an integer number (28554864).

Almost surely, 2^171225609 is an apocalyptic number.

It is an amenable number.

171225609 is a deficient number, since it is larger than the sum of its proper divisors (57213303).

171225609 is a wasteful number, since it uses less digits than its factorization.

171225609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34527.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 171225609 is about 13085.3203629105. The cubic root of 171225609 is about 555.2939048798.

The spelling of 171225609 in words is "one hundred seventy-one million, two hundred twenty-five thousand, six hundred nine".