165583385 has 32 divisors (see below), whose sum is σ = 229633920. Its totient is φ = 113356800.

The previous prime is 165583381. The next prime is 165583391. The reversal of 165583385 is 583385561.

It is not a de Polignac number, because 165583385 - 2² = 165583381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165583381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201275 + ... + 202095.

It is an arithmetic number, because the mean of its divisors is an integer number (7176060).

Almost surely, 2^165583385 is an apocalyptic number.

It is an amenable number.

165583385 is a deficient number, since it is larger than the sum of its proper divisors (64050535).

165583385 is a wasteful number, since it uses less digits than its factorization.

165583385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049.

The product of its digits is 432000, while the sum is 44.

The square root of 165583385 is about 12867.9207722149. The cubic root of 165583385 is about 549.1263098236.

The spelling of 165583385 in words is "one hundred sixty-five million, five hundred eighty-three thousand, three hundred eighty-five".