165705241 has 8 divisors (see below), whose sum is σ = 178560704. Its totient is φ = 152865360.

The previous prime is 165705227. The next prime is 165705247. The reversal of 165705241 is 142507561.

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 165705241 - 2⁵ = 165705209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165705247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27796 + ... + 33226.

It is an arithmetic number, because the mean of its divisors is an integer number (22320088).

Almost surely, 2^165705241 is an apocalyptic number.

It is an amenable number.

165705241 is a deficient number, since it is larger than the sum of its proper divisors (12855463).

165705241 is a wasteful number, since it uses less digits than its factorization.

165705241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7791.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 165705241 is about 12872.6547766962. The cubic root of 165705241 is about 549.2609810001.

The spelling of 165705241 in words is "one hundred sixty-five million, seven hundred five thousand, two hundred forty-one".