170800145 has 4 divisors (see below), whose sum is σ = 204960180. Its totient is φ = 136640112.

The previous prime is 170800127. The next prime is 170800187. The reversal of 170800145 is 541008071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541008071 = 19 ⋅28474109.

It can be written as a sum of positive squares in 2 ways, for example, as 99042304 + 71757841 = 9952^2 + 8471^2 .

It is a cyclic number.

It is not a de Polignac number, because 170800145 - 2⁶ = 170800081 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17080010 + ... + 17080019.

It is an arithmetic number, because the mean of its divisors is an integer number (51240045).

Almost surely, 2^170800145 is an apocalyptic number.

It is an amenable number.

170800145 is a deficient number, since it is larger than the sum of its proper divisors (34160035).

170800145 is an equidigital number, since it uses as much as digits as its factorization.

170800145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34160034.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 170800145 is about 13069.0529496211. The cubic root of 170800145 is about 554.8335891529.

The spelling of 170800145 in words is "one hundred seventy million, eight hundred thousand, one hundred forty-five".