166255212 has 12 divisors (see below), whose sum is σ = 387928856. Its totient is φ = 55418400.

The previous prime is 166255183. The next prime is 166255217. The reversal of 166255212 is 212552661.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 166255212.

It is not an unprimeable number, because it can be changed into a prime (166255217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6927289 + ... + 6927312.

Almost surely, 2^166255212 is an apocalyptic number.

166255212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166255212 is an abundant number, since it is smaller than the sum of its proper divisors (221673644).

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

166255212 is a wasteful number, since it uses less digits than its factorization.

166255212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13854608 (or 13854606 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 166255212 is about 12893.9990693345. Note that the first 3 decimals coincide. The cubic root of 166255212 is about 549.8679705122.

The spelling of 166255212 in words is "one hundred sixty-six million, two hundred fifty-five thousand, two hundred twelve".