165240101 has 8 divisors (see below), whose sum is σ = 178752000. Its totient is φ = 151842672.

The previous prime is 165240079. The next prime is 165240121. The reversal of 165240101 is 101042561.

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 165240101 - 2⁶ = 165240037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165240121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25601 + ... + 31398.

It is an arithmetic number, because the mean of its divisors is an integer number (22344000).

Almost surely, 2^165240101 is an apocalyptic number.

It is an amenable number.

165240101 is a deficient number, since it is larger than the sum of its proper divisors (13511899).

165240101 is a wasteful number, since it uses less digits than its factorization.

165240101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57235.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 165240101 is about 12854.5750999401. The cubic root of 165240101 is about 548.7465682301.

Adding to 165240101 its reverse (101042561), we get a palindrome (266282662).

The spelling of 165240101 in words is "one hundred sixty-five million, two hundred forty thousand, one hundred one".