159549223 has 4 divisors (see below), whose sum is σ = 160767288. Its totient is φ = 158331160.

The previous prime is 159549197. The next prime is 159549227. The reversal of 159549223 is 322945951.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159549223 is a prime.

It is a super-3 number, since 3×159549223³ (a number of 26 digits) contains 333 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 (159549227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608836 + ... + 609097.

It is an arithmetic number, because the mean of its divisors is an integer number (40191822).

Almost surely, 2^159549223 is an apocalyptic number.

159549223 is a deficient number, since it is larger than the sum of its proper divisors (1218065).

159549223 is a wasteful number, since it uses less digits than its factorization.

159549223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218064.

The product of its digits is 97200, while the sum is 40.

The square root of 159549223 is about 12631.2795472193. The cubic root of 159549223 is about 542.3732116795.

The spelling of 159549223 in words is "one hundred fifty-nine million, five hundred forty-nine thousand, two hundred twenty-three".