12504551 has 2 divisors, whose sum is σ = 12504552. Its totient is φ = 12504550.

The previous prime is 12504533. The next prime is 12504553. The reversal of 12504551 is 15540521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12504551 is a prime.

Together with 12504553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12504553) 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, 6252275 + 6252276.

It is an arithmetic number, because the mean of its divisors is an integer number (6252276).

Almost surely, 2^12504551 is an apocalyptic number.

12504551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12504551 is an equidigital number, since it uses as much as digits as its factorization.

12504551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 12504551 is about 3536.1774559544. The cubic root of 12504551 is about 232.1076034242.

The spelling of 12504551 in words is "twelve million, five hundred four thousand, five hundred fifty-one".