201705172 has 12 divisors (see below), whose sum is σ = 354242196. Its totient is φ = 100493120.

The previous prime is 201705169. The next prime is 201705211. The reversal of 201705172 is 271507102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 172501956 + 29203216 = 13134^2 + 5404^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88603 + ... + 90850.

It is an arithmetic number, because the mean of its divisors is an integer number (29520183).

Almost surely, 2^201705172 is an apocalyptic number.

It is an amenable number.

201705172 is a deficient number, since it is larger than the sum of its proper divisors (152537024).

201705172 is a wasteful number, since it uses less digits than its factorization.

201705172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179738 (or 179736 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 201705172 is about 14202.2946033379. The cubic root of 201705172 is about 586.4608309979.

The spelling of 201705172 in words is "two hundred one million, seven hundred five thousand, one hundred seventy-two".