159601555 has 8 divisors (see below), whose sum is σ = 191631744. Its totient is φ = 127608000.

The previous prime is 159601483. The next prime is 159601573. The reversal of 159601555 is 555106951.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-159601555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1575 + ... + 17935.

It is an arithmetic number, because the mean of its divisors is an integer number (23953968).

Almost surely, 2^159601555 is an apocalyptic number.

159601555 is a deficient number, since it is larger than the sum of its proper divisors (32030189).

159601555 is a wasteful number, since it uses less digits than its factorization.

159601555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18317.

The product of its (nonzero) digits is 33750, while the sum is 37.

The square root of 159601555 is about 12633.3509014829. The cubic root of 159601555 is about 542.4325045040.

The spelling of 159601555 in words is "one hundred fifty-nine million, six hundred one thousand, five hundred fifty-five".