165065055 has 16 divisors (see below), whose sum is σ = 269088480. Its totient is φ = 86373248.

The previous prime is 165065039. The next prime is 165065059. The reversal of 165065055 is 550560561.

It is a cyclic number.

It is not a de Polignac number, because 165065055 - 2⁴ = 165065039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165065059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103020 + ... + 104609.

It is an arithmetic number, because the mean of its divisors is an integer number (16818030).

Almost surely, 2^165065055 is an apocalyptic number.

165065055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165065055 is a deficient number, since it is larger than the sum of its proper divisors (104023425).

165065055 is a wasteful number, since it uses less digits than its factorization.

165065055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207690.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 165065055 is about 12847.7645915544. The cubic root of 165065055 is about 548.5527294264.

The spelling of 165065055 in words is "one hundred sixty-five million, sixty-five thousand, fifty-five".