165644552 has 16 divisors (see below), whose sum is σ = 310735440. Its totient is φ = 82781776.

The previous prime is 165644543. The next prime is 165644573. The reversal of 165644552 is 255446561.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19103 + ... + 26385.

It is an arithmetic number, because the mean of its divisors is an integer number (19420965).

Almost surely, 2^165644552 is an apocalyptic number.

It is an amenable number.

165644552 is a deficient number, since it is larger than the sum of its proper divisors (145090888).

165644552 is a wasteful number, since it uses less digits than its factorization.

165644552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10132 (or 10128 counting only the distinct ones).

The product of its digits is 144000, while the sum is 38.

The square root of 165644552 is about 12870.2972770640. The cubic root of 165644552 is about 549.1939178025.

The spelling of 165644552 in words is "one hundred sixty-five million, six hundred forty-four thousand, five hundred fifty-two".