12154523 has 2 divisors, whose sum is σ = 12154524. Its totient is φ = 12154522.

The previous prime is 12154517. The next prime is 12154553. The reversal of 12154523 is 32545121.

12154523 is nontrivially palindromic in base 3.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12154523 - 2⁸ = 12154267 is a prime.

It is not a weakly prime, because it can be changed into another prime (12154553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077261 + 6077262.

It is an arithmetic number, because the mean of its divisors is an integer number (6077262).

Almost surely, 2^12154523 is an apocalyptic number.

12154523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12154523 is an equidigital number, since it uses as much as digits as its factorization.

12154523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 12154523 is about 3486.3337476495. Note that the first 3 decimals coincide. The cubic root of 12154523 is about 229.9213530725.

Adding to 12154523 its reverse (32545121), we get a palindrome (44699644).

The spelling of 12154523 in words is "twelve million, one hundred fifty-four thousand, five hundred twenty-three".