165198055 has 16 divisors (see below), whose sum is σ = 217597824. Its totient is φ = 119400480.

The previous prime is 165198023. The next prime is 165198071. The reversal of 165198055 is 550891561.

It is not a de Polignac number, because 165198055 - 2⁵ = 165198023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165197999 and 165198017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249 + ... + 18178.

It is an arithmetic number, because the mean of its divisors is an integer number (13599864).

Almost surely, 2^165198055 is an apocalyptic number.

165198055 is a deficient number, since it is larger than the sum of its proper divisors (52399769).

165198055 is a wasteful number, since it uses less digits than its factorization.

165198055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18606.

The product of its (nonzero) digits is 54000, while the sum is 40.

The square root of 165198055 is about 12852.9395470453. The cubic root of 165198055 is about 548.7000207005.

The spelling of 165198055 in words is "one hundred sixty-five million, one hundred ninety-eight thousand, fifty-five".