159555501 has 28 divisors (see below), whose sum is σ = 273407392. Its totient is φ = 91171656.

The previous prime is 159555437. The next prime is 159555503. The reversal of 159555501 is 105555951.

It is a happy number.

159555501 is a `hidden beast` number, since 1 + 59 + 55 + 550 + 1 = 666.

It is not a de Polignac number, because 159555501 - 2⁶ = 159555437 is a prime.

It is a super-2 number, since 2×159555501² = 50915915798722002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159555503) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 10531 + ... + 20736.

Almost surely, 2^159555501 is an apocalyptic number.

It is an amenable number.

159555501 is a deficient number, since it is larger than the sum of its proper divisors (113851891).

159555501 is an frugal number, since it uses more digits than its factorization.

159555501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31292 (or 31277 counting only the distinct ones).

The product of its (nonzero) digits is 28125, while the sum is 36.

The square root of 159555501 is about 12631.5280548317. The cubic root of 159555501 is about 542.3803254180.

The spelling of 159555501 in words is "one hundred fifty-nine million, five hundred fifty-five thousand, five hundred one".