12515453 has 2 divisors, whose sum is σ = 12515454. Its totient is φ = 12515452.

The previous prime is 12515449. The next prime is 12515467. The reversal of 12515453 is 35451521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12376324 + 139129 = 3518^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 12515453 - 2² = 12515449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12515423) 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 as a sum of consecutive naturals, namely, 6257726 + 6257727.

It is an arithmetic number, because the mean of its divisors is an integer number (6257727).

Almost surely, 2^12515453 is an apocalyptic number.

It is an amenable number.

12515453 is a deficient number, since it is larger than the sum of its proper divisors (1).

12515453 is an equidigital number, since it uses as much as digits as its factorization.

12515453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000, while the sum is 26.

The square root of 12515453 is about 3537.7186151530. The cubic root of 12515453 is about 232.1750375946.

Adding to 12515453 its reverse (35451521), we get a palindrome (47966974).

The spelling of 12515453 in words is "twelve million, five hundred fifteen thousand, four hundred fifty-three".