159021159 has 16 divisors (see below), whose sum is σ = 231517440. Its totient is φ = 96287360.

The previous prime is 159021157. The next prime is 159021193. The reversal of 159021159 is 951120951.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 159021159 - 2¹ = 159021157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159021157) 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, 59647 + ... + 62255.

It is an arithmetic number, because the mean of its divisors is an integer number (14469840).

Almost surely, 2^159021159 is an apocalyptic number.

159021159 is a deficient number, since it is larger than the sum of its proper divisors (72496281).

159021159 is a wasteful number, since it uses less digits than its factorization.

159021159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4470.

The product of its (nonzero) digits is 4050, while the sum is 33.

The square root of 159021159 is about 12610.3591939326. The cubic root of 159021159 is about 541.7741816508.

The spelling of 159021159 in words is "one hundred fifty-nine million, twenty-one thousand, one hundred fifty-nine".