872173 has 2 divisors, whose sum is σ = 872174. Its totient is φ = 872172.

The previous prime is 872161. The next prime is 872177. The reversal of 872173 is 371278.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 777924 + 94249 = 882^2 + 307^2 .

It is a cyclic number.

It is not a de Polignac number, because 872173 - 2⁵ = 872141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436086 + 436087.

It is an arithmetic number, because the mean of its divisors is an integer number (436087).

2⁸⁷²¹⁷³ is an apocalyptic number.

It is an amenable number.

872173 is a deficient number, since it is larger than the sum of its proper divisors (1).

872173 is an equidigital number, since it uses as much as digits as its factorization.

872173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 28.

The square root of 872173 is about 933.9020291230. The cubic root of 872173 is about 95.5434412161.

The spelling of 872173 in words is "eight hundred seventy-two thousand, one hundred seventy-three".