12450551 has 2 divisors, whose sum is σ = 12450552. Its totient is φ = 12450550.

The previous prime is 12450547. The next prime is 12450563. The reversal of 12450551 is 15505421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12450551 - 2² = 12450547 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12410551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6225275 + 6225276.

It is an arithmetic number, because the mean of its divisors is an integer number (6225276).

Almost surely, 2^12450551 is an apocalyptic number.

12450551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12450551 is an equidigital number, since it uses as much as digits as its factorization.

12450551 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 12450551 is about 3528.5338314943. The cubic root of 12450551 is about 231.7730080140.

Adding to 12450551 its reverse (15505421), we get a palindrome (27955972).

The spelling of 12450551 in words is "twelve million, four hundred fifty thousand, five hundred fifty-one".