165737541 has 16 divisors (see below), whose sum is σ = 227492928. Its totient is φ = 107251200.

The previous prime is 165737503. The next prime is 165737591. The reversal of 165737541 is 145737561.

It is not a de Polignac number, because 165737541 - 2¹⁰ = 165736517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165737541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165737591) 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 15 ways as a sum of consecutive naturals, for example, 52981 + ... + 56021.

It is an arithmetic number, because the mean of its divisors is an integer number (14218308).

Almost surely, 2^165737541 is an apocalyptic number.

It is an amenable number.

165737541 is a deficient number, since it is larger than the sum of its proper divisors (61755387).

165737541 is a wasteful number, since it uses less digits than its factorization.

165737541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572.

The product of its digits is 88200, while the sum is 39.

The square root of 165737541 is about 12873.9093130253. The cubic root of 165737541 is about 549.2966668098.

The spelling of 165737541 in words is "one hundred sixty-five million, seven hundred thirty-seven thousand, five hundred forty-one".