159557992 has 64 divisors (see below), whose sum is σ = 351682560. Its totient is φ = 67108800.

The previous prime is 159557977. The next prime is 159557999. The reversal of 159557992 is 299755951.

It is a super-2 number, since 2×159557992² = 50917505622144128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (159557999) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 61473 + ... + 64015.

It is an arithmetic number, because the mean of its divisors is an integer number (5495040).

Almost surely, 2^159557992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159557992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175841280).

159557992 is an abundant number, since it is smaller than the sum of its proper divisors (192124568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159557992 is a wasteful number, since it uses less digits than its factorization.

159557992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614 (or 2610 counting only the distinct ones).

The product of its digits is 1275750, while the sum is 52.

The square root of 159557992 is about 12631.6266569274. The cubic root of 159557992 is about 542.3831479726.

The spelling of 159557992 in words is "one hundred fifty-nine million, five hundred fifty-seven thousand, nine hundred ninety-two".