165275856 has 40 divisors (see below), whose sum is σ = 474404160. Its totient is φ = 55091808.

The previous prime is 165275837. The next prime is 165275857. The reversal of 165275856 is 658572561.

165275856 is a `hidden beast` number, since 1 + 65 + 2 + 7 + 585 + 6 = 666.

165275856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165275856² = 54632217153065472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165275857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190860 + ... + 191723.

It is an arithmetic number, because the mean of its divisors is an integer number (11860104).

Almost surely, 2^165275856 is an apocalyptic number.

165275856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165275856 is an abundant number, since it is smaller than the sum of its proper divisors (309128304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165275856 is a wasteful number, since it uses less digits than its factorization.

165275856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382600 (or 382588 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 165275856 is about 12855.9657746900. The cubic root of 165275856 is about 548.7861450205.

The spelling of 165275856 in words is "one hundred sixty-five million, two hundred seventy-five thousand, eight hundred fifty-six".