163172 has 18 divisors (see below), whose sum is σ = 304038. Its totient is φ = 76608.

The previous prime is 163171. The next prime is 163181. The reversal of 163172 is 271361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 92416 + 70756 = 304^2 + 266^2 .

It is not an unprimeable number, because it can be changed into a prime (163171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1388 + ... + 1500.

It is an arithmetic number, because the mean of its divisors is an integer number (16891).

2¹⁶³¹⁷² is an apocalyptic number.

It is an amenable number.

163172 is a deficient number, since it is larger than the sum of its proper divisors (140866).

163172 is a wasteful number, since it uses less digits than its factorization.

163172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 134 counting only the distinct ones).

The product of its digits is 252, while the sum is 20.

The square root of 163172 is about 403.9455408839. The cubic root of 163172 is about 54.6447628554.

The spelling of 163172 in words is "one hundred sixty-three thousand, one hundred seventy-two".