165255215 has 16 divisors (see below), whose sum is σ = 215097120. Its totient is φ = 121390080.

The previous prime is 165255199. The next prime is 165255247. The reversal of 165255215 is 512552561.

It is not a de Polignac number, because 165255215 - 2⁴ = 165255199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20225 + ... + 27194.

It is an arithmetic number, because the mean of its divisors is an integer number (13443570).

Almost surely, 2^165255215 is an apocalyptic number.

165255215 is a deficient number, since it is larger than the sum of its proper divisors (49841905).

165255215 is a wasteful number, since it uses less digits than its factorization.

165255215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47482.

The product of its digits is 15000, while the sum is 32.

The square root of 165255215 is about 12855.1629705733. The cubic root of 165255215 is about 548.7632984360.

The spelling of 165255215 in words is "one hundred sixty-five million, two hundred fifty-five thousand, two hundred fifteen".