165361055 has 16 divisors (see below), whose sum is σ = 201243744. Its totient is φ = 130429440.

The previous prime is 165361051. The next prime is 165361061. The reversal of 165361055 is 550163561.

It is not a de Polignac number, because 165361055 - 2² = 165361051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165361051) 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, 110915 + ... + 112395.

It is an arithmetic number, because the mean of its divisors is an integer number (12577734).

Almost surely, 2^165361055 is an apocalyptic number.

165361055 is a deficient number, since it is larger than the sum of its proper divisors (35882689).

165361055 is a wasteful number, since it uses less digits than its factorization.

165361055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 165361055 is about 12859.2789455708. The cubic root of 165361055 is about 548.8804277952.

The spelling of 165361055 in words is "one hundred sixty-five million, three hundred sixty-one thousand, fifty-five".