159256897 has 4 divisors (see below), whose sum is σ = 159917956. Its totient is φ = 158595840.

The previous prime is 159256861. The next prime is 159256913. The reversal of 159256897 is 798652951.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52940176 + 106316721 = 7276^2 + 10311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159256897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159256847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330168 + ... + 330649.

It is an arithmetic number, because the mean of its divisors is an integer number (39979489).

Almost surely, 2^159256897 is an apocalyptic number.

It is an amenable number.

159256897 is a deficient number, since it is larger than the sum of its proper divisors (661059).

159256897 is an equidigital number, since it uses as much as digits as its factorization.

159256897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661058.

The product of its digits is 1360800, while the sum is 52.

The square root of 159256897 is about 12619.7027302548. The cubic root of 159256897 is about 542.0417638692.

It can be divided in two parts, 15925 and 6897, that added together give a palindrome (22822).

The spelling of 159256897 in words is "one hundred fifty-nine million, two hundred fifty-six thousand, eight hundred ninety-seven".