12045511 has 8 divisors (see below), whose sum is σ = 12299984. Its totient is φ = 11793600.

The previous prime is 12045497. The next prime is 12045521. The reversal of 12045511 is 11554021.

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 12045511 - 2¹⁵ = 12012743 is a prime.

It is a super-2 number, since 2×12045511² = 290188670502242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12045521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10936 + ... + 11986.

It is an arithmetic number, because the mean of its divisors is an integer number (1537498).

Almost surely, 2^12045511 is an apocalyptic number.

12045511 is a deficient number, since it is larger than the sum of its proper divisors (254473).

12045511 is a wasteful number, since it uses less digits than its factorization.

12045511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 12045511 is about 3470.6643456261. The cubic root of 12045511 is about 229.2319116632.

Adding to 12045511 its reverse (11554021), we get a palindrome (23599532).

The spelling of 12045511 in words is "twelve million, forty-five thousand, five hundred eleven".