159897601 has 2 divisors, whose sum is σ = 159897602. Its totient is φ = 159897600.

The previous prime is 159897589. The next prime is 159897629. The reversal of 159897601 is 106798951.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150038001 + 9859600 = 12249^2 + 3140^2 .

It is a cyclic number.

It is not a de Polignac number, because 159897601 - 2¹¹ = 159895553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (159897301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79948800 + 79948801.

It is an arithmetic number, because the mean of its divisors is an integer number (79948801).

Almost surely, 2^159897601 is an apocalyptic number.

It is an amenable number.

159897601 is a deficient number, since it is larger than the sum of its proper divisors (1).

159897601 is an equidigital number, since it uses as much as digits as its factorization.

159897601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 159897601 is about 12645.0623169678. The cubic root of 159897601 is about 542.7676845828.

It can be divided in two parts, 1598 and 97601, that added together give a palindrome (99199).

The spelling of 159897601 in words is "one hundred fifty-nine million, eight hundred ninety-seven thousand, six hundred one".