172552 has 8 divisors (see below), whose sum is σ = 323550. Its totient is φ = 86272.

The previous prime is 172541. The next prime is 172553. The reversal of 172552 is 255271.

It can be written as a sum of positive squares in only one way, i.e., 171396 + 1156 = 414^2 + 34^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (172553) by changing a digit.

172552 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10777 + ... + 10792.

2¹⁷²⁵⁵² is an apocalyptic number.

It is an amenable number.

172552 is a deficient number, since it is larger than the sum of its proper divisors (150998).

172552 is a wasteful number, since it uses less digits than its factorization.

172552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21575 (or 21571 counting only the distinct ones).

The product of its digits is 700, while the sum is 22.

The square root of 172552 is about 415.3937890725. The cubic root of 172552 is about 55.6724070877.

The spelling of 172552 in words is "one hundred seventy-two thousand, five hundred fifty-two".