159397556 has 24 divisors (see below), whose sum is σ = 287130816. Its totient is φ = 77394240.

The previous prime is 159397523. The next prime is 159397561. The reversal of 159397556 is 655793951.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 14840 + ... + 23216.

It is an arithmetic number, because the mean of its divisors is an integer number (11963784).

Almost surely, 2^159397556 is an apocalyptic number.

It is an amenable number.

159397556 is a deficient number, since it is larger than the sum of its proper divisors (127733260).

159397556 is a wasteful number, since it uses less digits than its factorization.

159397556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8519 (or 8517 counting only the distinct ones).

The product of its digits is 1275750, while the sum is 50.

The square root of 159397556 is about 12625.2744920655. The cubic root of 159397556 is about 542.2012977595.

The spelling of 159397556 in words is "one hundred fifty-nine million, three hundred ninety-seven thousand, five hundred fifty-six".