165237285 has 32 divisors (see below), whose sum is σ = 274129920. Its totient is φ = 84902400.

The previous prime is 165237283. The next prime is 165237323. The reversal of 165237285 is 582732561.

It is not a de Polignac number, because 165237285 - 2¹ = 165237283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165237283) 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 31 ways as a sum of consecutive naturals, for example, 124425 + ... + 125745.

It is an arithmetic number, because the mean of its divisors is an integer number (8566560).

Almost surely, 2^165237285 is an apocalyptic number.

165237285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165237285 is a deficient number, since it is larger than the sum of its proper divisors (108892635).

165237285 is a wasteful number, since it uses less digits than its factorization.

165237285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629.

The product of its digits is 100800, while the sum is 39.

The square root of 165237285 is about 12854.4655664870. The cubic root of 165237285 is about 548.7434509901.

The spelling of 165237285 in words is "one hundred sixty-five million, two hundred thirty-seven thousand, two hundred eighty-five".