165445003 has 8 divisors (see below), whose sum is σ = 182793888. Its totient is φ = 148942464.

The previous prime is 165444991. The next prime is 165445051. The reversal of 165445003 is 300544561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165445003 - 2¹⁷ = 165313931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165445303) by changing a digit.

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, 211176 + ... + 211957.

It is an arithmetic number, because the mean of its divisors is an integer number (22849236).

Almost surely, 2^165445003 is an apocalyptic number.

165445003 is a deficient number, since it is larger than the sum of its proper divisors (17348885).

165445003 is a wasteful number, since it uses less digits than its factorization.

165445003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423173.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 165445003 is about 12862.5426335542. The cubic root of 165445003 is about 548.9732945206.

Adding to 165445003 its reverse (300544561), we get a palindrome (465989564).

The spelling of 165445003 in words is "one hundred sixty-five million, four hundred forty-five thousand, three".