159800561 has 16 divisors (see below), whose sum is σ = 172662336. Its totient is φ = 147350016.

The previous prime is 159800539. The next prime is 159800569. The reversal of 159800561 is 165008951.

159800561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-159800561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159800569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349445 + ... + 349901.

It is an arithmetic number, because the mean of its divisors is an integer number (10791396).

Almost surely, 2^159800561 is an apocalyptic number.

It is an amenable number.

159800561 is a deficient number, since it is larger than the sum of its proper divisors (12861775).

159800561 is a wasteful number, since it uses less digits than its factorization.

159800561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 159800561 is about 12641.2246637737. The cubic root of 159800561 is about 542.6578625585.

The spelling of 159800561 in words is "one hundred fifty-nine million, eight hundred thousand, five hundred sixty-one".