171055020 has 96 divisors (see below), whose sum is σ = 514902528. Its totient is φ = 42273792.

The previous prime is 171055019. The next prime is 171055051. The reversal of 171055020 is 20550171.

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 31 ways as a sum of consecutive naturals, for example, 67089 + ... + 69591.

It is an arithmetic number, because the mean of its divisors is an integer number (5363568).

Almost surely, 2^171055020 is an apocalyptic number.

171055020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171055020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257451264).

171055020 is an abundant number, since it is smaller than the sum of its proper divisors (343847508).

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

171055020 is a wasteful number, since it uses less digits than its factorization.

171055020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599 (or 2597 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 171055020 is about 13078.8004037068. The cubic root of 171055020 is about 555.1094338220.

The spelling of 171055020 in words is "one hundred seventy-one million, fifty-five thousand, twenty".