165506050 has 24 divisors (see below), whose sum is σ = 325951236. Its totient is φ = 62307840.

The previous prime is 165506039. The next prime is 165506057. The reversal of 165506050 is 50605561.

It can be written as a sum of positive squares in 6 ways, for example, as 65885689 + 99620361 = 8117^2 + 9981^2 .

It is not an unprimeable number, because it can be changed into a prime (165506057) 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 11 ways as a sum of consecutive naturals, for example, 96507 + ... + 98206.

Almost surely, 2^165506050 is an apocalyptic number.

165506050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165506050 is a deficient number, since it is larger than the sum of its proper divisors (160445186).

165506050 is a wasteful number, since it uses less digits than its factorization.

165506050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194742 (or 194737 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 165506050 is about 12864.9154680472. The cubic root of 165506050 is about 549.0408074926.

The spelling of 165506050 in words is "one hundred sixty-five million, five hundred six thousand, fifty".