12055506 has 8 divisors (see below), whose sum is σ = 24111024. Its totient is φ = 4018500.

The previous prime is 12055493. The next prime is 12055513. The reversal of 12055506 is 60555021.

It is a sphenic number, since it is the product of 3 distinct primes.

12055506 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004620 + ... + 1004631.

It is an arithmetic number, because the mean of its divisors is an integer number (3013878).

Almost surely, 2^12055506 is an apocalyptic number.

12055506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12055506 is a wasteful number, since it uses less digits than its factorization.

12055506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009256.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 12055506 is about 3472.1039730976. The cubic root of 12055506 is about 229.2952973658.

It can be divided in two parts, 12055 and 506, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 12055506 in words is "twelve million, fifty-five thousand, five hundred six".