12454521 has 8 divisors (see below), whose sum is σ = 16753440. Its totient is φ = 8229312.

The previous prime is 12454517. The next prime is 12454531. The reversal of 12454521 is 12545421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12454521 - 2² = 12454517 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12454491 and 12454500.

It is not an unprimeable number, because it can be changed into a prime (12454501) 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 7 ways as a sum of consecutive naturals, for example, 18031 + ... + 18708.

It is an arithmetic number, because the mean of its divisors is an integer number (2094180).

Almost surely, 2^12454521 is an apocalyptic number.

It is an amenable number.

12454521 is a deficient number, since it is larger than the sum of its proper divisors (4298919).

12454521 is a wasteful number, since it uses less digits than its factorization.

12454521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36855.

The product of its digits is 1600, while the sum is 24.

The square root of 12454521 is about 3529.0963432584. The cubic root of 12454521 is about 231.7976398840.

Adding to 12454521 its reverse (12545421), we get a palindrome (24999942).

It can be divided in two parts, 124 and 54521, that added together give a palindrome (54645).

The spelling of 12454521 in words is "twelve million, four hundred fifty-four thousand, five hundred twenty-one".