165552444 has 96 divisors (see below), whose sum is σ = 441423360. Its totient is φ = 53640576.

The previous prime is 165552437. The next prime is 165552463. The reversal of 165552444 is 444255561.

165552444 is a `hidden beast` number, since 1 + 65 + 552 + 4 + 44 = 666.

165552444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165552444² = 54815223428746272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (96000) is a multiple of the sum of its prime factors (384).

It is a junction number, because it is equal to n+sod(n) for n = 165552399 and 165552408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 991249 + ... + 991415.

It is an arithmetic number, because the mean of its divisors is an integer number (4598160).

Almost surely, 2^165552444 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 165552444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220711680).

165552444 is an abundant number, since it is smaller than the sum of its proper divisors (275870916).

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

165552444 is a wasteful number, since it uses less digits than its factorization.

165552444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 376 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The square root of 165552444 is about 12866.7184627628. The cubic root of 165552444 is about 549.0921043476.

The spelling of 165552444 in words is "one hundred sixty-five million, five hundred fifty-two thousand, four hundred forty-four".