159641 has 4 divisors (see below), whose sum is σ = 160512. Its totient is φ = 158772.

The previous prime is 159631. The next prime is 159667. The reversal of 159641 is 146951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 159641 - 2¹⁰ = 158617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159641.

It is not an unprimeable number, because it can be changed into a prime (159631) 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 in 3 ways as a sum of consecutive naturals, for example, 41 + ... + 566.

It is an arithmetic number, because the mean of its divisors is an integer number (40128).

2¹⁵⁹⁶⁴¹ is an apocalyptic number.

It is an amenable number.

159641 is a deficient number, since it is larger than the sum of its proper divisors (871).

159641 is an equidigital number, since it uses as much as digits as its factorization.

159641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870.

The product of its digits is 1080, while the sum is 26.

The square root of 159641 is about 399.5509979965. The cubic root of 159641 is about 54.2477187627.

The spelling of 159641 in words is "one hundred fifty-nine thousand, six hundred forty-one".