159681375 has 96 divisors (see below), whose sum is σ = 341612544. Its totient is φ = 72900000.

The previous prime is 159681331. The next prime is 159681427. The reversal of 159681375 is 573186951.

It is a happy number.

159681375 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 159681375 - 2⁶ = 159681311 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 159681375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 212250 + ... + 213000.

It is an arithmetic number, because the mean of its divisors is an integer number (3558464).

Almost surely, 2^159681375 is an apocalyptic number.

159681375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

159681375 is an abundant number, since it is smaller than the sum of its proper divisors (181931169).

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

159681375 is an frugal number, since it uses more digits than its factorization.

159681375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 766 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 159681375 is about 12636.5096051085. The cubic root of 159681375 is about 542.5229166277.

The spelling of 159681375 in words is "one hundred fifty-nine million, six hundred eighty-one thousand, three hundred seventy-five".