17145385 has 4 divisors (see below), whose sum is σ = 20574468. Its totient is φ = 13716304.

The previous prime is 17145379. The next prime is 17145397. The reversal of 17145385 is 58354171.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58354171 = 2351 ⋅24821.

It can be written as a sum of positive squares in 2 ways, for example, as 4012009 + 13133376 = 2003^2 + 3624^2 .

It is a cyclic number.

It is not a de Polignac number, because 17145385 - 2¹¹ = 17143337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17145385.

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, 1714534 + ... + 1714543.

It is an arithmetic number, because the mean of its divisors is an integer number (5143617).

Almost surely, 2^17145385 is an apocalyptic number.

It is an amenable number.

17145385 is a deficient number, since it is larger than the sum of its proper divisors (3429083).

17145385 is an equidigital number, since it uses as much as digits as its factorization.

17145385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429082.

The product of its digits is 16800, while the sum is 34.

The square root of 17145385 is about 4140.6986125532. The cubic root of 17145385 is about 257.8590711217.

The spelling of 17145385 in words is "seventeen million, one hundred forty-five thousand, three hundred eighty-five".