159616901 has 2 divisors, whose sum is σ = 159616902. Its totient is φ = 159616900.

The previous prime is 159616843. The next prime is 159616921. The reversal of 159616901 is 109616951.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135163876 + 24453025 = 11626^2 + 4945^2 .

It is a cyclic number.

It is not a de Polignac number, because 159616901 - 2⁶ = 159616837 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 (159616921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79808450 + 79808451.

It is an arithmetic number, because the mean of its divisors is an integer number (79808451).

Almost surely, 2^159616901 is an apocalyptic number.

It is an amenable number.

159616901 is a deficient number, since it is larger than the sum of its proper divisors (1).

159616901 is an equidigital number, since it uses as much as digits as its factorization.

159616901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 159616901 is about 12633.9582475169. The cubic root of 159616901 is about 542.4498892603.

The spelling of 159616901 in words is "one hundred fifty-nine million, six hundred sixteen thousand, nine hundred one".