165511255 has 16 divisors (see below), whose sum is σ = 244448064. Its totient is φ = 104762880.

The previous prime is 165511231. The next prime is 165511267. The reversal of 165511255 is 552115561.

165511255 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 165511255 - 2²⁵ = 131956823 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, 181426 + ... + 182335.

It is an arithmetic number, because the mean of its divisors is an integer number (15278004).

Almost surely, 2^165511255 is an apocalyptic number.

165511255 is a deficient number, since it is larger than the sum of its proper divisors (78936809).

165511255 is a wasteful number, since it uses less digits than its factorization.

165511255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363786.

The product of its digits is 7500, while the sum is 31.

The square root of 165511255 is about 12865.1177608291. The cubic root of 165511255 is about 549.0465630273.

The spelling of 165511255 in words is "one hundred sixty-five million, five hundred eleven thousand, two hundred fifty-five".