12154532 has 24 divisors (see below), whose sum is σ = 23469432. Its totient is φ = 5472000.

The previous prime is 12154523. The next prime is 12154553. The reversal of 12154532 is 23545121.

It can be written as a sum of positive squares in 4 ways, for example, as 141376 + 12013156 = 376^2 + 3466^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12154498 and 12154507.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 719 + ... + 4982.

It is an arithmetic number, because the mean of its divisors is an integer number (977893).

Almost surely, 2^12154532 is an apocalyptic number.

It is an amenable number.

12154532 is a deficient number, since it is larger than the sum of its proper divisors (11314900).

12154532 is a wasteful number, since it uses less digits than its factorization.

12154532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759 (or 5757 counting only the distinct ones).

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

The square root of 12154532 is about 3486.3350384035. The cubic root of 12154532 is about 229.9214098220.

Adding to 12154532 its reverse (23545121), we get a palindrome (35699653).

The spelling of 12154532 in words is "twelve million, one hundred fifty-four thousand, five hundred thirty-two".