172485 has 12 divisors (see below), whose sum is σ = 299052. Its totient is φ = 91968.

The previous prime is 172441. The next prime is 172489. The reversal of 172485 is 584271.

It can be written as a sum of positive squares in 2 ways, for example, as 49284 + 123201 = 222^2 + 351^2 .

It is not a de Polignac number, because 172485 - 2⁶ = 172421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1872 + ... + 1961.

It is an arithmetic number, because the mean of its divisors is an integer number (24921).

2¹⁷²⁴⁸⁵ is an apocalyptic number.

172485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172485 is a deficient number, since it is larger than the sum of its proper divisors (126567).

172485 is a wasteful number, since it uses less digits than its factorization.

172485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844 (or 3841 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 172485 is about 415.3131348754. The cubic root of 172485 is about 55.6652004984.

The spelling of 172485 in words is "one hundred seventy-two thousand, four hundred eighty-five".