12521814 has 8 divisors (see below), whose sum is σ = 25043640. Its totient is φ = 4173936.

The previous prime is 12521801. The next prime is 12521837. The reversal of 12521814 is 41812521.

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

12521814 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1043479 + ... + 1043490.

It is an arithmetic number, because the mean of its divisors is an integer number (3130455).

Almost surely, 2^12521814 is an apocalyptic number.

12521814 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12521814 is a wasteful number, since it uses less digits than its factorization.

12521814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086974.

The product of its digits is 640, while the sum is 24.

The square root of 12521814 is about 3538.6175266621. The cubic root of 12521814 is about 232.2143653835.

The spelling of 12521814 in words is "twelve million, five hundred twenty-one thousand, eight hundred fourteen".