165943055 has 16 divisors (see below), whose sum is σ = 212275200. Its totient is φ = 124169760.

The previous prime is 165943051. The next prime is 165943061. The reversal of 165943055 is 550349561.

165943055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165943055 - 2² = 165943051 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165943051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3551 + ... + 18560.

It is an arithmetic number, because the mean of its divisors is an integer number (13267200).

Almost surely, 2^165943055 is an apocalyptic number.

165943055 is a deficient number, since it is larger than the sum of its proper divisors (46332145).

165943055 is a wasteful number, since it uses less digits than its factorization.

165943055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22214.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 165943055 is about 12881.8886425865. Note that the first 3 decimals coincide. The cubic root of 165943055 is about 549.5236150444.

The spelling of 165943055 in words is "one hundred sixty-five million, nine hundred forty-three thousand, fifty-five".