12054509 has 2 divisors, whose sum is σ = 12054510. Its totient is φ = 12054508.

The previous prime is 12054499. The next prime is 12054521. The reversal of 12054509 is 90545021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11628100 + 426409 = 3410^2 + 653^2 .

It is a cyclic number.

It is not a de Polignac number, because 12054509 - 2⁸ = 12054253 is a prime.

It is a super-2 number, since 2×12054509² = 290622374462162, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12054589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6027254 + 6027255.

It is an arithmetic number, because the mean of its divisors is an integer number (6027255).

Almost surely, 2^12054509 is an apocalyptic number.

It is an amenable number.

12054509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12054509 is an equidigital number, since it uses as much as digits as its factorization.

12054509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 12054509 is about 3471.9603972396. The cubic root of 12054509 is about 229.2889762233.

It can be divided in two parts, 1205 and 4509, that multiplied together give a palindrome (5433345).

The spelling of 12054509 in words is "twelve million, fifty-four thousand, five hundred nine".