165437 has 2 divisors, whose sum is σ = 165438. Its totient is φ = 165436.

The previous prime is 165397. The next prime is 165443. The reversal of 165437 is 734561.

165437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155236 + 10201 = 394^2 + 101^2 .

It is a cyclic number.

It is not a de Polignac number, because 165437 - 2⁸ = 165181 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165457) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82718 + 82719.

It is an arithmetic number, because the mean of its divisors is an integer number (82719).

2¹⁶⁵⁴³⁷ is an apocalyptic number.

It is an amenable number.

165437 is a deficient number, since it is larger than the sum of its proper divisors (1).

165437 is an equidigital number, since it uses as much as digits as its factorization.

165437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 165437 is about 406.7394743567. The cubic root of 165437 is about 54.8964442628.

Adding to 165437 its reverse (734561), we get a palindrome (899998).

The spelling of 165437 in words is "one hundred sixty-five thousand, four hundred thirty-seven".