159541 has 2 divisors, whose sum is σ = 159542. Its totient is φ = 159540.

The previous prime is 159539. The next prime is 159553. The reversal of 159541 is 145951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125316 + 34225 = 354^2 + 185^2 .

It is a cyclic number.

It is not a de Polignac number, because 159541 - 2¹ = 159539 is a prime.

Together with 159539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79770 + 79771.

It is an arithmetic number, because the mean of its divisors is an integer number (79771).

2¹⁵⁹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

159541 is a deficient number, since it is larger than the sum of its proper divisors (1).

159541 is an equidigital number, since it uses as much as digits as its factorization.

159541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 25.

The square root of 159541 is about 399.4258379224. The cubic root of 159541 is about 54.2363893737.

The spelling of 159541 in words is "one hundred fifty-nine thousand, five hundred forty-one".