165541208 has 48 divisors (see below), whose sum is σ = 362403720. Its totient is φ = 70683648.

The previous prime is 165541177. The next prime is 165541217. The reversal of 165541208 is 802145561.

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 11 ways as a sum of consecutive naturals, for example, 135416 + ... + 136632.

Almost surely, 2^165541208 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 165541208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181201860).

165541208 is an abundant number, since it is smaller than the sum of its proper divisors (196862512).

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

165541208 is a wasteful number, since it uses less digits than its factorization.

165541208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584 (or 1573 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 165541208 is about 12866.2818249874. The cubic root of 165541208 is about 549.0796818219.

Adding to 165541208 its reverse (802145561), we get a palindrome (967686769).

The spelling of 165541208 in words is "one hundred sixty-five million, five hundred forty-one thousand, two hundred eight".