159243975 has 72 divisors (see below), whose sum is σ = 322812672. Its totient is φ = 77176800.

The previous prime is 159243971. The next prime is 159243989. The reversal of 159243975 is 579342951.

It is a happy number.

It is not a de Polignac number, because 159243975 - 2² = 159243971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 159243975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159243971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 65634 + ... + 68016.

Almost surely, 2^159243975 is an apocalyptic number.

159243975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

159243975 is an abundant number, since it is smaller than the sum of its proper divisors (163568697).

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

159243975 is a wasteful number, since it uses less digits than its factorization.

159243975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419 (or 2402 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 159243975 is about 12619.1907426744. The cubic root of 159243975 is about 542.0271031685.

The spelling of 159243975 in words is "one hundred fifty-nine million, two hundred forty-three thousand, nine hundred seventy-five".