165055565 has 8 divisors (see below), whose sum is σ = 208491360. Its totient is φ = 125094672.

The previous prime is 165055549. The next prime is 165055571. The reversal of 165055565 is 565550561.

165055565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165055565 - 2⁴ = 165055549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868619 + ... + 868808.

It is an arithmetic number, because the mean of its divisors is an integer number (26061420).

Almost surely, 2^165055565 is an apocalyptic number.

It is an amenable number.

165055565 is a deficient number, since it is larger than the sum of its proper divisors (43435795).

165055565 is a wasteful number, since it uses less digits than its factorization.

165055565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737451.

The product of its (nonzero) digits is 112500, while the sum is 38.

The square root of 165055565 is about 12847.3952612971. The cubic root of 165055565 is about 548.5422166720.

The spelling of 165055565 in words is "one hundred sixty-five million, fifty-five thousand, five hundred sixty-five".