159172611 has 16 divisors (see below), whose sum is σ = 228792480. Its totient is φ = 97850880.

The previous prime is 159172603. The next prime is 159172639. The reversal of 159172611 is 116271951.

It is not a de Polignac number, because 159172611 - 2³ = 159172603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159172711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56701 + ... + 59441.

It is an arithmetic number, because the mean of its divisors is an integer number (14299530).

Almost surely, 2^159172611 is an apocalyptic number.

159172611 is a deficient number, since it is larger than the sum of its proper divisors (69619869).

159172611 is a wasteful number, since it uses less digits than its factorization.

159172611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246.

The product of its digits is 3780, while the sum is 33.

The square root of 159172611 is about 12616.3628276932. The cubic root of 159172611 is about 541.9461226021.

It can be divided in two parts, 15917 and 2611, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 159172611 in words is "one hundred fifty-nine million, one hundred seventy-two thousand, six hundred eleven".