165411055 has 16 divisors (see below), whose sum is σ = 218027520. Its totient is φ = 119911968.

The previous prime is 165411031. The next prime is 165411061. The reversal of 165411055 is 550114561.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 165411055 - 2²³ = 157022447 is a prime.

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, 35667 + ... + 40036.

It is an arithmetic number, because the mean of its divisors is an integer number (13626720).

Almost surely, 2^165411055 is an apocalyptic number.

165411055 is a deficient number, since it is larger than the sum of its proper divisors (52616465).

165411055 is a wasteful number, since it uses less digits than its factorization.

165411055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75750.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 165411055 is about 12861.2229200803. Note that the first 3 decimals coincide. The cubic root of 165411055 is about 548.9357436328.

The spelling of 165411055 in words is "one hundred sixty-five million, four hundred eleven thousand, fifty-five".