171856056 has 16 divisors (see below), whose sum is σ = 429640200. Its totient is φ = 57285344.

The previous prime is 171856039. The next prime is 171856067. The reversal of 171856056 is 650658171.

171856056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 3580311 + ... + 3580358.

Almost surely, 2^171856056 is an apocalyptic number.

It is an amenable number.

171856056 is an abundant number, since it is smaller than the sum of its proper divisors (257784144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171856056 is a wasteful number, since it uses less digits than its factorization.

171856056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7160678 (or 7160674 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 171856056 is about 13109.3880864059. The cubic root of 171856056 is about 555.9745947021.

The spelling of 171856056 in words is "one hundred seventy-one million, eight hundred fifty-six thousand, fifty-six".