165105456 has 20 divisors (see below), whose sum is σ = 426522552. Its totient is φ = 55035136.

The previous prime is 165105443. The next prime is 165105463. The reversal of 165105456 is 654501561.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719801 + ... + 1719896.

Almost surely, 2^165105456 is an apocalyptic number.

165105456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165105456 is an abundant number, since it is smaller than the sum of its proper divisors (261417096).

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

165105456 is a wasteful number, since it uses less digits than its factorization.

165105456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439708 (or 3439702 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 165105456 is about 12849.3367922239. The cubic root of 165105456 is about 548.5974800066.

It can be divided in two parts, 165105 and 456, that added together give a palindrome (165561).

The spelling of 165105456 in words is "one hundred sixty-five million, one hundred five thousand, four hundred fifty-six".