159358221 has 24 divisors (see below), whose sum is σ = 265883904. Its totient is φ = 90898560.

The previous prime is 159358217. The next prime is 159358249. The reversal of 159358221 is 122853951.

159358221 is a `hidden beast` number, since 1 + 59 + 3 + 582 + 21 = 666.

It is not a de Polignac number, because 159358221 - 2² = 159358217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159358211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45661 + ... + 49026.

It is an arithmetic number, because the mean of its divisors is an integer number (11078496).

Almost surely, 2^159358221 is an apocalyptic number.

159358221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

159358221 is a deficient number, since it is larger than the sum of its proper divisors (106525683).

159358221 is a wasteful number, since it uses less digits than its factorization.

159358221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94721 (or 94718 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 159358221 is about 12623.7166080358. The cubic root of 159358221 is about 542.1566938915.

The spelling of 159358221 in words is "one hundred fifty-nine million, three hundred fifty-eight thousand, two hundred twenty-one".