12045555 has 12 divisors (see below), whose sum is σ = 20879040. Its totient is φ = 6424272.

The previous prime is 12045521. The next prime is 12045589. The reversal of 12045555 is 55554021.

It is an interprime number because it is at equal distance from previous prime (12045521) and next prime (12045589).

It is not a de Polignac number, because 12045555 - 2⁷ = 12045427 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133795 + ... + 133884.

It is an arithmetic number, because the mean of its divisors is an integer number (1739920).

Almost surely, 2^12045555 is an apocalyptic number.

12045555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12045555 is a deficient number, since it is larger than the sum of its proper divisors (8833485).

12045555 is a wasteful number, since it uses less digits than its factorization.

12045555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267690 (or 267687 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 12045555 is about 3470.6706844643. The cubic root of 12045555 is about 229.2321907767.

Adding to 12045555 its reverse (55554021), we get a palindrome (67599576).

The spelling of 12045555 in words is "twelve million, forty-five thousand, five hundred fifty-five".