168541 has 2 divisors, whose sum is σ = 168542. Its totient is φ = 168540.

The previous prime is 168533. The next prime is 168559. The reversal of 168541 is 145861.

168541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168100 + 441 = 410^2 + 21^2 .

It is an emirp because it is prime and its reverse (145861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168541 - 2³ = 168533 is a prime.

It is equal to p₁₅₃₇₉ and since 168541 and 15379 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84270 + 84271.

It is an arithmetic number, because the mean of its divisors is an integer number (84271).

2¹⁶⁸⁵⁴¹ is an apocalyptic number.

It is an amenable number.

168541 is a deficient number, since it is larger than the sum of its proper divisors (1).

168541 is an equidigital number, since it uses as much as digits as its factorization.

168541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 25.

The square root of 168541 is about 410.5374526155. The cubic root of 168541 is about 55.2376493486.

The spelling of 168541 in words is "one hundred sixty-eight thousand, five hundred forty-one".