165042522 has 40 divisors (see below), whose sum is σ = 370804500. Its totient is φ = 54867456.

The previous prime is 165042499. The next prime is 165042571. The reversal of 165042522 is 225240561.

165042522 is a `hidden beast` number, since 1 + 650 + 4 + 2 + 5 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 156275001 + 8767521 = 12501^2 + 2961^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 71604 + ... + 73872.

Almost surely, 2^165042522 is an apocalyptic number.

165042522 is an abundant number, since it is smaller than the sum of its proper divisors (205761978).

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

165042522 is a wasteful number, since it uses less digits than its factorization.

165042522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 165042522 is about 12846.8876386462. The cubic root of 165042522 is about 548.5277673468.

The spelling of 165042522 in words is "one hundred sixty-five million, forty-two thousand, five hundred twenty-two".