165244404 has 24 divisors (see below), whose sum is σ = 415229920. Its totient is φ = 50844384.

The previous prime is 165244393. The next prime is 165244421. The reversal of 165244404 is 404442561.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 529474 + ... + 529785.

Almost surely, 2^165244404 is an apocalyptic number.

It is an amenable number.

165244404 is an abundant number, since it is smaller than the sum of its proper divisors (249985516).

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

165244404 is a wasteful number, since it uses less digits than its factorization.

165244404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059279 (or 1059277 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 165244404 is about 12854.7424711660. The cubic root of 165244404 is about 548.7513314725.

Adding to 165244404 its reverse (404442561), we get a palindrome (569686965).

It can be divided in two parts, 1652 and 44404, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 165244404 in words is "one hundred sixty-five million, two hundred forty-four thousand, four hundred four".