159409556 has 6 divisors (see below), whose sum is σ = 278966730. Its totient is φ = 79704776.

The previous prime is 159409553. The next prime is 159409567. The reversal of 159409556 is 655904951.

It can be written as a sum of positive squares in only one way, i.e., 144817156 + 14592400 = 12034^2 + 3820^2 .

It is a super-2 number, since 2×159409556² = 50822813088234272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159409553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19926191 + ... + 19926198.

It is an arithmetic number, because the mean of its divisors is an integer number (46494455).

Almost surely, 2^159409556 is an apocalyptic number.

It is an amenable number.

159409556 is a deficient number, since it is larger than the sum of its proper divisors (119557174).

159409556 is a wasteful number, since it uses less digits than its factorization.

159409556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39852393 (or 39852391 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 159409556 is about 12625.7497203136. The cubic root of 159409556 is about 542.2149036818.

The spelling of 159409556 in words is "one hundred fifty-nine million, four hundred nine thousand, five hundred fifty-six".