545173 has 4 divisors (see below), whose sum is σ = 577260. Its totient is φ = 513088.

The previous prime is 545161. The next prime is 545189. The reversal of 545173 is 371545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 438244 + 106929 = 662^2 + 327^2 .

It is a cyclic number.

It is not a de Polignac number, because 545173 - 2⁵ = 545141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16018 + ... + 16051.

It is an arithmetic number, because the mean of its divisors is an integer number (144315).

2⁵⁴⁵¹⁷³ is an apocalyptic number.

It is an amenable number.

545173 is a deficient number, since it is larger than the sum of its proper divisors (32087).

545173 is a wasteful number, since it uses less digits than its factorization.

545173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32086.

The product of its digits is 2100, while the sum is 25.

The square root of 545173 is about 738.3583140996. The cubic root of 545173 is about 81.6917337091.

The spelling of 545173 in words is "five hundred forty-five thousand, one hundred seventy-three".