165522556 has 12 divisors (see below), whose sum is σ = 292919760. Its totient is φ = 81831200.

The previous prime is 165522541. The next prime is 165522593. The reversal of 165522556 is 655225561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232120 + ... + 232831.

It is an arithmetic number, because the mean of its divisors is an integer number (24409980).

Almost surely, 2^165522556 is an apocalyptic number.

It is an amenable number.

165522556 is a deficient number, since it is larger than the sum of its proper divisors (127397204).

165522556 is a wasteful number, since it uses less digits than its factorization.

165522556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465044 (or 465042 counting only the distinct ones).

The product of its digits is 90000, while the sum is 37.

The square root of 165522556 is about 12865.5569642359. The cubic root of 165522556 is about 549.0590589228.

The spelling of 165522556 in words is "one hundred sixty-five million, five hundred twenty-two thousand, five hundred fifty-six".