165550154 has 64 divisors (see below), whose sum is σ = 337305600. Its totient is φ = 58968000.

The previous prime is 165550141. The next prime is 165550207. The reversal of 165550154 is 451055561.

It is a self number, because there is not a number n which added to its sum of digits gives 165550154.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83879 + ... + 85829.

It is an arithmetic number, because the mean of its divisors is an integer number (5270400).

Almost surely, 2^165550154 is an apocalyptic number.

165550154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

165550154 is an abundant number, since it is smaller than the sum of its proper divisors (171755446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165550154 is a wasteful number, since it uses less digits than its factorization.

165550154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 165550154 is about 12866.6294731759. The cubic root of 165550154 is about 549.0895725683.

The spelling of 165550154 in words is "one hundred sixty-five million, five hundred fifty thousand, one hundred fifty-four".