159348821 has 2 divisors, whose sum is σ = 159348822. Its totient is φ = 159348820.

The previous prime is 159348731. The next prime is 159348851. The reversal of 159348821 is 128843951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154008100 + 5340721 = 12410^2 + 2311^2 .

It is a cyclic number.

It is not a de Polignac number, because 159348821 - 2²⁶ = 92239957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159348851) 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 as a sum of consecutive naturals, namely, 79674410 + 79674411.

It is an arithmetic number, because the mean of its divisors is an integer number (79674411).

Almost surely, 2^159348821 is an apocalyptic number.

It is an amenable number.

159348821 is a deficient number, since it is larger than the sum of its proper divisors (1).

159348821 is an equidigital number, since it uses as much as digits as its factorization.

159348821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 41.

The square root of 159348821 is about 12623.3442874699. The cubic root of 159348821 is about 542.1460336881.

The spelling of 159348821 in words is "one hundred fifty-nine million, three hundred forty-eight thousand, eight hundred twenty-one".