159945556 has 12 divisors (see below), whose sum is σ = 289556820. Its totient is φ = 77215040.

The previous prime is 159945529. The next prime is 159945587. The reversal of 159945556 is 655549951.

It can be written as a sum of positive squares in 2 ways, for example, as 62252100 + 97693456 = 7890^2 + 9884^2 .

It is a super-3 number, since 3×159945556³ (a number of 26 digits) contains 333 as substring.

It is a pancake number, because a pancake can be divided into 159945556 parts by 17885 straight cuts.

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 3 ways as a sum of consecutive naturals, for example, 689305 + ... + 689536.

It is an arithmetic number, because the mean of its divisors is an integer number (24129735).

Almost surely, 2^159945556 is an apocalyptic number.

It is an amenable number.

159945556 is a deficient number, since it is larger than the sum of its proper divisors (129611264).

159945556 is a wasteful number, since it uses less digits than its factorization.

159945556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378874 (or 1378872 counting only the distinct ones).

The product of its digits is 1215000, while the sum is 49.

The square root of 159945556 is about 12646.9583695053. The cubic root of 159945556 is about 542.8219397697.

The spelling of 159945556 in words is "one hundred fifty-nine million, nine hundred forty-five thousand, five hundred fifty-six".