159861597 has 8 divisors (see below), whose sum is σ = 243598656. Its totient is φ = 91349472.

The previous prime is 159861587. The next prime is 159861607. The reversal of 159861597 is 795168951.

It is an interprime number because it is at equal distance from previous prime (159861587) and next prime (159861607).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 159861597 - 2¹⁵ = 159828829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159861517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3806208 + ... + 3806249.

It is an arithmetic number, because the mean of its divisors is an integer number (30449832).

Almost surely, 2^159861597 is an apocalyptic number.

It is an amenable number.

159861597 is a deficient number, since it is larger than the sum of its proper divisors (83737059).

159861597 is an equidigital number, since it uses as much as digits as its factorization.

159861597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7612467.

The product of its digits is 680400, while the sum is 51.

The square root of 159861597 is about 12643.6385981251. The cubic root of 159861597 is about 542.7269433532.

The spelling of 159861597 in words is "one hundred fifty-nine million, eight hundred sixty-one thousand, five hundred ninety-seven".