159573645 has 240 divisors, whose sum is σ = 393294528. Its totient is φ = 60963840.

The previous prime is 159573607. The next prime is 159573649. The reversal of 159573645 is 546375951.

159573645 is a `hidden beast` number, since 15 + 9 + 573 + 64 + 5 = 666.

It is not a de Polignac number, because 159573645 - 2¹¹ = 159571597 is a prime.

It is a super-3 number, since 3×159573645³ (a number of 26 digits) contains 333 as substring.

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 159573645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159573649) by changing a digit.

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 239 ways as a sum of consecutive naturals, for example, 3710994 + ... + 3711036.

Almost surely, 2^159573645 is an apocalyptic number.

159573645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

159573645 is an abundant number, since it is smaller than the sum of its proper divisors (233720883).

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

159573645 is a wasteful number, since it uses less digits than its factorization.

159573645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 86 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 159573645 is about 12632.2462373087. The cubic root of 159573645 is about 542.4008837306.

The spelling of 159573645 in words is "one hundred fifty-nine million, five hundred seventy-three thousand, six hundred forty-five".