165047056 has 20 divisors (see below), whose sum is σ = 320288652. Its totient is φ = 82391936.

The previous prime is 165047039. The next prime is 165047089. The reversal of 165047056 is 650740561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 78854400 + 86192656 = 8880^2 + 9284^2 .

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, 2550 + ... + 18346.

Almost surely, 2^165047056 is an apocalyptic number.

165047056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165047056 is a deficient number, since it is larger than the sum of its proper divisors (155241596).

165047056 is a wasteful number, since it uses less digits than its factorization.

165047056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16458 (or 16452 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 165047056 is about 12847.0641004083. The cubic root of 165047056 is about 548.5327902990.

The spelling of 165047056 in words is "one hundred sixty-five million, forty-seven thousand, fifty-six".