159805441 has 4 divisors (see below), whose sum is σ = 162820692. Its totient is φ = 156790192.

The previous prime is 159805369. The next prime is 159805469. The reversal of 159805441 is 144508951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144508951 = 97 ⋅1489783.

It can be written as a sum of positive squares in 2 ways, for example, as 60902416 + 98903025 = 7804^2 + 9945^2 .

It is a cyclic number.

It is not a de Polignac number, because 159805441 - 2¹⁹ = 159281153 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 159805441.

It is not an unprimeable number, because it can be changed into a prime (159805141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1507546 + ... + 1507651.

It is an arithmetic number, because the mean of its divisors is an integer number (40705173).

Almost surely, 2^159805441 is an apocalyptic number.

It is an amenable number.

159805441 is a deficient number, since it is larger than the sum of its proper divisors (3015251).

159805441 is an equidigital number, since it uses as much as digits as its factorization.

159805441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3015250.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 159805441 is about 12641.4176815735. The cubic root of 159805441 is about 542.6633864094.

The spelling of 159805441 in words is "one hundred fifty-nine million, eight hundred five thousand, four hundred forty-one".