12000055 has 8 divisors (see below), whose sum is σ = 14896800. Its totient is φ = 9268896.

The previous prime is 12000029. The next prime is 12000073. The reversal of 12000055 is 55000021.

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

It is a cyclic number.

It is not a de Polignac number, because 12000055 - 2⁷ = 11999927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11999999 and 12000044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41235 + ... + 41524.

It is an arithmetic number, because the mean of its divisors is an integer number (1862100).

Almost surely, 2^12000055 is an apocalyptic number.

12000055 is a deficient number, since it is larger than the sum of its proper divisors (2896745).

12000055 is an equidigital number, since it uses as much as digits as its factorization.

12000055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82793.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 12000055 is about 3464.1095536949. The cubic root of 12000055 is about 228.9431982839.

Adding to 12000055 its reverse (55000021), we get a palindrome (67000076).

The spelling of 12000055 in words is "twelve million, fifty-five", and thus it is an aban number and an uban number.