159021155 has 8 divisors (see below), whose sum is σ = 190900752. Its totient is φ = 127166688.

The previous prime is 159021131. The next prime is 159021157. The reversal of 159021155 is 551120951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 159021155 - 2⁶ = 159021091 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 13064 + ... + 22106.

It is an arithmetic number, because the mean of its divisors is an integer number (23862594).

Almost surely, 2^159021155 is an apocalyptic number.

159021155 is a deficient number, since it is larger than the sum of its proper divisors (31879597).

159021155 is an equidigital number, since it uses as much as digits as its factorization.

159021155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12565.

The product of its (nonzero) digits is 2250, while the sum is 29.

The square root of 159021155 is about 12610.3590353328. The cubic root of 159021155 is about 541.7741771082.

The spelling of 159021155 in words is "one hundred fifty-nine million, twenty-one thousand, one hundred fifty-five".