159302221 has 8 divisors (see below), whose sum is σ = 172227384. Its totient is φ = 146472960.

The previous prime is 159302219. The next prime is 159302233. The reversal of 159302221 is 122203951.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19802500 + 139499721 = 4450^2 + 11811^2 .

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 159302221 - 2¹ = 159302219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159302021) 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, 20500 + ... + 27181.

It is an arithmetic number, because the mean of its divisors is an integer number (21528423).

Almost surely, 2^159302221 is an apocalyptic number.

It is an amenable number.

159302221 is a deficient number, since it is larger than the sum of its proper divisors (12925163).

159302221 is a wasteful number, since it uses less digits than its factorization.

159302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47951.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 159302221 is about 12621.4983658835. The cubic root of 159302221 is about 542.0931801053.

The spelling of 159302221 in words is "one hundred fifty-nine million, three hundred two thousand, two hundred twenty-one".