165221282 has 8 divisors (see below), whose sum is σ = 258607296. Its totient is φ = 79018852.

The previous prime is 165221281. The next prime is 165221293. The reversal of 165221282 is 282122561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (165221281) by changing a digit.

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, 1795838 + ... + 1795929.

It is an arithmetic number, because the mean of its divisors is an integer number (32325912).

Almost surely, 2^165221282 is an apocalyptic number.

165221282 is a deficient number, since it is larger than the sum of its proper divisors (93386014).

165221282 is a wasteful number, since it uses less digits than its factorization.

165221282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591792.

The product of its digits is 3840, while the sum is 29.

The square root of 165221282 is about 12853.8430829072. The cubic root of 165221282 is about 548.7257354062.

The spelling of 165221282 in words is "one hundred sixty-five million, two hundred twenty-one thousand, two hundred eighty-two".