161285548 has 12 divisors (see below), whose sum is σ = 282560040. Its totient is φ = 80554112.

The previous prime is 161285507. The next prime is 161285563. The reversal of 161285548 is 845582161.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 161285548.

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, 17986 + ... + 25417.

It is an arithmetic number, because the mean of its divisors is an integer number (23546670).

Almost surely, 2^161285548 is an apocalyptic number.

It is an amenable number.

161285548 is a deficient number, since it is larger than the sum of its proper divisors (121274492).

161285548 is a wasteful number, since it uses less digits than its factorization.

161285548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44336 (or 44334 counting only the distinct ones).

The product of its digits is 76800, while the sum is 40.

The square root of 161285548 is about 12699.8247231999. The cubic root of 161285548 is about 544.3336107892. Note that the first 3 decimals are identical.

The spelling of 161285548 in words is "one hundred sixty-one million, two hundred eighty-five thousand, five hundred forty-eight".