173087 has 2 divisors, whose sum is σ = 173088.
Its totient is φ = 173086.
The previous prime is 173081. The next prime is 173099. The reversal of 173087 is 780371.
173087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It is an emirp because it is prime and its reverse (780371) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 173087 - 26 = 173023 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (173081) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86543 + 86544.
It is an arithmetic number, because the mean of its divisors is an integer number (86544).
2173087 is an apocalyptic number.
173087 is a deficient number, since it is larger than the sum of its proper divisors (1).
173087 is an equidigital number, since it uses as much as digits as its factorization.
173087 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1176, while the sum is 26.
The square root of 173087 is about 416.0372579469.
The cubic root of 173087 is about 55.7298854286.
The spelling of 173087 in words is "one hundred seventy-three thousand, eighty-seven".