159565220 has 24 divisors (see below), whose sum is σ = 336849408. Its totient is φ = 63490400.

The previous prime is 159565207. The next prime is 159565229. The reversal of 159565220 is 22565951.

It is a super-2 number, since 2×159565220² = 50922118867296800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (159565229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17066 + ... + 24705.

It is an arithmetic number, because the mean of its divisors is an integer number (14035392).

Almost surely, 2^159565220 is an apocalyptic number.

159565220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159565220 is an abundant number, since it is smaller than the sum of its proper divisors (177284188).

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

159565220 is a wasteful number, since it uses less digits than its factorization.

159565220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41971 (or 41969 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 159565220 is about 12631.9127609400. The cubic root of 159565220 is about 542.3913378605.

The spelling of 159565220 in words is "one hundred fifty-nine million, five hundred sixty-five thousand, two hundred twenty".