171661144 has 16 divisors (see below), whose sum is σ = 335859120. Its totient is φ = 82098720.

The previous prime is 171661141. The next prime is 171661151. The reversal of 171661144 is 441166171.

171661144 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 not an unprimeable number, because it can be changed into a prime (171661141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466287 + ... + 466654.

It is an arithmetic number, because the mean of its divisors is an integer number (20991195).

Almost surely, 2^171661144 is an apocalyptic number.

It is an amenable number.

171661144 is a deficient number, since it is larger than the sum of its proper divisors (164197976).

171661144 is a wasteful number, since it uses less digits than its factorization.

171661144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932970 (or 932966 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 171661144 is about 13101.9519156498. The cubic root of 171661144 is about 555.7643274263.

The spelling of 171661144 in words is "one hundred seventy-one million, six hundred sixty-one thousand, one hundred forty-four".