12154516 has 12 divisors (see below), whose sum is σ = 23204160. Its totient is φ = 5524760.

The previous prime is 12154501. The next prime is 12154517. The reversal of 12154516 is 61545121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154517) by changing a digit.

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, 138076 + ... + 138163.

It is an arithmetic number, because the mean of its divisors is an integer number (1933680).

Almost surely, 2^12154516 is an apocalyptic number.

It is an amenable number.

12154516 is a deficient number, since it is larger than the sum of its proper divisors (11049644).

12154516 is a wasteful number, since it uses less digits than its factorization.

12154516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276254 (or 276252 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 12154516 is about 3486.3327437294. The cubic root of 12154516 is about 229.9213089339.

Adding to 12154516 its reverse (61545121), we get a palindrome (73699637).

The spelling of 12154516 in words is "twelve million, one hundred fifty-four thousand, five hundred sixteen".