173573 has 2 divisors, whose sum is σ = 173574. Its totient is φ = 173572.

The previous prime is 173561. The next prime is 173599. The reversal of 173573 is 375371.

It is an a-pointer prime, because the next prime (173599) can be obtained adding 173573 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91204 + 82369 = 302^2 + 287^2 .

It is an emirp because it is prime and its reverse (375371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173573 - 2¹⁴ = 157189 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86786 + 86787.

It is an arithmetic number, because the mean of its divisors is an integer number (86787).

2¹⁷³⁵⁷³ is an apocalyptic number.

It is an amenable number.

173573 is a deficient number, since it is larger than the sum of its proper divisors (1).

173573 is an equidigital number, since it uses as much as digits as its factorization.

173573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2205, while the sum is 26.

The square root of 173573 is about 416.6209308232. The cubic root of 173573 is about 55.7819968214.

The spelling of 173573 in words is "one hundred seventy-three thousand, five hundred seventy-three".