159997201 has 27 divisors (see below), whose sum is σ = 202997691. Its totient is φ = 125680464.

The previous prime is 159997141. The next prime is 159997237. The reversal of 159997201 is 102799951.

The square root of 159997201 is 12649.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 23668225 + 136328976 = 4865^2 + 11676^2 .

It is not a de Polignac number, because 159997201 - 2⁷ = 159997073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159997241) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1150990 + ... + 1151128.

It is an arithmetic number, because the mean of its divisors is an integer number (7518433).

Almost surely, 2^159997201 is an apocalyptic number.

159997201 is the 12649-th square number.

159997201 is the 6325-th centered octagonal number.

It is an amenable number.

159997201 is a deficient number, since it is larger than the sum of its proper divisors (43000490).

159997201 is an equidigital number, since it uses as much as digits as its factorization.

159997201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 43.

The cubic root of 159997201 is about 542.8803576110.

The spelling of 159997201 in words is "one hundred fifty-nine million, nine hundred ninety-seven thousand, two hundred one".