159128556 has 12 divisors (see below), whose sum is σ = 371299992. Its totient is φ = 53042848.

The previous prime is 159128533. The next prime is 159128561. The reversal of 159128556 is 655821951.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6630345 + ... + 6630368.

It is an arithmetic number, because the mean of its divisors is an integer number (30941666).

Almost surely, 2^159128556 is an apocalyptic number.

It is an amenable number.

159128556 is an abundant number, since it is smaller than the sum of its proper divisors (212171436).

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

159128556 is a wasteful number, since it uses less digits than its factorization.

159128556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13260720 (or 13260718 counting only the distinct ones).

The product of its digits is 108000, while the sum is 42.

The square root of 159128556 is about 12614.6167599337. The cubic root of 159128556 is about 541.8961189419.

The spelling of 159128556 in words is "one hundred fifty-nine million, one hundred twenty-eight thousand, five hundred fifty-six".