171145384 has 8 divisors (see below), whose sum is σ = 320897610. Its totient is φ = 85572688.

The previous prime is 171145379. The next prime is 171145391. The reversal of 171145384 is 483541171.

It can be written as a sum of positive squares in only one way, i.e., 155700484 + 15444900 = 12478^2 + 3930^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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, 10696579 + ... + 10696594.

Almost surely, 2^171145384 is an apocalyptic number.

It is an amenable number.

171145384 is a deficient number, since it is larger than the sum of its proper divisors (149752226).

171145384 is a wasteful number, since it uses less digits than its factorization.

171145384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21393179 (or 21393175 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 171145384 is about 13082.2545457578. The cubic root of 171145384 is about 555.2071666614.

The spelling of 171145384 in words is "one hundred seventy-one million, one hundred forty-five thousand, three hundred eighty-four".