12072055 has 4 divisors (see below), whose sum is σ = 14486472. Its totient is φ = 9657640.

The previous prime is 12072037. The next prime is 12072119. The reversal of 12072055 is 55027021.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-12072055 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207201 + ... + 1207210.

It is an arithmetic number, because the mean of its divisors is an integer number (3621618).

Almost surely, 2^12072055 is an apocalyptic number.

12072055 is a deficient number, since it is larger than the sum of its proper divisors (2414417).

12072055 is an equidigital number, since it uses as much as digits as its factorization.

12072055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414416.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 12072055 is about 3474.4862929648. The cubic root of 12072055 is about 229.4001698578.

Adding to 12072055 its reverse (55027021), we get a palindrome (67099076).

The spelling of 12072055 in words is "twelve million, seventy-two thousand, fifty-five".