159559493 has 2 divisors, whose sum is σ = 159559494. Its totient is φ = 159559492.

The previous prime is 159559427. The next prime is 159559583. The reversal of 159559493 is 394955951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99062209 + 60497284 = 9953^2 + 7778^2 .

It is a cyclic number.

It is not a de Polignac number, because 159559493 - 2⁸ = 159559237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159559193) 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, 79779746 + 79779747.

It is an arithmetic number, because the mean of its divisors is an integer number (79779747).

Almost surely, 2^159559493 is an apocalyptic number.

It is an amenable number.

159559493 is a deficient number, since it is larger than the sum of its proper divisors (1).

159559493 is an equidigital number, since it uses as much as digits as its factorization.

159559493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1093500, while the sum is 50.

The square root of 159559493 is about 12631.6860711466. The cubic root of 159559493 is about 542.3848487431.

The spelling of 159559493 in words is "one hundred fifty-nine million, five hundred fifty-nine thousand, four hundred ninety-three".