165550044 has 96 divisors (see below), whose sum is σ = 454164480. Its totient is φ = 46411200.

The previous prime is 165550031. The next prime is 165550051. The reversal of 165550044 is 440055561.

It is a junction number, because it is equal to n+sod(n) for n = 165549993 and 165550020.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 93237 + ... + 94995.

It is an arithmetic number, because the mean of its divisors is an integer number (4730880).

Almost surely, 2^165550044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165550044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227082240).

165550044 is an abundant number, since it is smaller than the sum of its proper divisors (288614436).

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

165550044 is a wasteful number, since it uses less digits than its factorization.

165550044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831 (or 1829 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 165550044 is about 12866.6251985515. The cubic root of 165550044 is about 549.0894509539.

The spelling of 165550044 in words is "one hundred sixty-five million, five hundred fifty thousand, forty-four".