165215005 has 8 divisors (see below), whose sum is σ = 198338400. Its totient is φ = 132118416.

The previous prime is 165214999. The next prime is 165215021. The reversal of 165215005 is 500512561.

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 165215005 - 2²¹ = 163117853 is a prime.

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, 11226 + ... + 21364.

It is an arithmetic number, because the mean of its divisors is an integer number (24792300).

Almost surely, 2^165215005 is an apocalyptic number.

It is an amenable number.

165215005 is a deficient number, since it is larger than the sum of its proper divisors (33123395).

165215005 is a wasteful number, since it uses less digits than its factorization.

165215005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13403.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 165215005 is about 12853.5989123669. The cubic root of 165215005 is about 548.7187863518.

Adding to 165215005 its reverse (500512561), we get a palindrome (665727566).

The spelling of 165215005 in words is "one hundred sixty-five million, two hundred fifteen thousand, five".