165155112 has 40 divisors (see below), whose sum is σ = 462589050. Its totient is φ = 55051488.

The previous prime is 165155069. The next prime is 165155117. The reversal of 165155112 is 211551561.

165155112 is a `hidden beast` number, since 1 + 651 + 5 + 5 + 1 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 164711556 + 443556 = 12834^2 + 666^2 .

It is a super-2 number, since 2×165155112² = 54552422039465088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (165155117) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 126787 + ... + 128082.

Almost surely, 2^165155112 is an apocalyptic number.

165155112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165155112 is an abundant number, since it is smaller than the sum of its proper divisors (297433938).

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

165155112 is a wasteful number, since it uses less digits than its factorization.

165155112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254887 (or 254874 counting only the distinct ones).

The product of its digits is 1500, while the sum is 27.

The square root of 165155112 is about 12851.2688867676. The cubic root of 165155112 is about 548.6524719829.

The spelling of 165155112 in words is "one hundred sixty-five million, one hundred fifty-five thousand, one hundred twelve".