12450521 has 8 divisors (see below), whose sum is σ = 13295040. Its totient is φ = 11631312.

The previous prime is 12450517. The next prime is 12450523. The reversal of 12450521 is 12505421.

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

It is a cyclic number.

It is not a de Polignac number, because 12450521 - 2² = 12450517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12450493 and 12450502.

It is not an unprimeable number, because it can be changed into a prime (12450523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5306 + ... + 7283.

It is an arithmetic number, because the mean of its divisors is an integer number (1661880).

Almost surely, 2^12450521 is an apocalyptic number.

It is an amenable number.

12450521 is a deficient number, since it is larger than the sum of its proper divisors (844519).

12450521 is a wasteful number, since it uses less digits than its factorization.

12450521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12655.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 12450521 is about 3528.5295804343. The cubic root of 12450521 is about 231.7728218591.

Adding to 12450521 its reverse (12505421), we get a palindrome (24955942).

The spelling of 12450521 in words is "twelve million, four hundred fifty thousand, five hundred twenty-one".