165659552 has 12 divisors (see below), whose sum is σ = 326142306. Its totient is φ = 82829760.

The previous prime is 165659539. The next prime is 165659561. The reversal of 165659552 is 255956561.

It can be written as a sum of positive squares in only one way, i.e., 152670736 + 12988816 = 12356^2 + 3604^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2588399 + ... + 2588462.

Almost surely, 2^165659552 is an apocalyptic number.

It is an amenable number.

165659552 is a deficient number, since it is larger than the sum of its proper divisors (160482754).

165659552 is an equidigital number, since it uses as much as digits as its factorization.

165659552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5176871 (or 5176863 counting only the distinct ones).

The product of its digits is 405000, while the sum is 44.

The square root of 165659552 is about 12870.8800009945. The cubic root of 165659552 is about 549.2104947841.

The spelling of 165659552 in words is "one hundred sixty-five million, six hundred fifty-nine thousand, five hundred fifty-two".