55173 has 8 divisors (see below), whose sum is σ = 75168. Its totient is φ = 35984.

The previous prime is 55171. The next prime is 55201. The reversal of 55173 is 37155.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55173 - 2¹ = 55171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15 + ... + 332.

It is an arithmetic number, because the mean of its divisors is an integer number (9396).

2⁵⁵¹⁷³ is an apocalyptic number.

55173 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

55173 is a deficient number, since it is larger than the sum of its proper divisors (19995).

55173 is a wasteful number, since it uses less digits than its factorization.

55173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403.

The product of its digits is 525, while the sum is 21.

The square root of 55173 is about 234.8893356455. The cubic root of 55173 is about 38.0693562542.

The spelling of 55173 in words is "fifty-five thousand, one hundred seventy-three".