51245443 has 2 divisors, whose sum is σ = 51245444. Its totient is φ = 51245442.

The previous prime is 51245437. The next prime is 51245461. The reversal of 51245443 is 34454215.

51245443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51245443 - 2⁹ = 51244931 is a prime.

It is not a weakly prime, because it can be changed into another prime (51245423) by changing a digit.

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 as a sum of consecutive naturals, namely, 25622721 + 25622722.

It is an arithmetic number, because the mean of its divisors is an integer number (25622722).

Almost surely, 2^51245443 is an apocalyptic number.

51245443 is a deficient number, since it is larger than the sum of its proper divisors (1).

51245443 is an equidigital number, since it uses as much as digits as its factorization.

51245443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 28.

The square root of 51245443 is about 7158.5922498771. The cubic root of 51245443 is about 371.4369323914.

Adding to 51245443 its reverse (34454215), we get a palindrome (85699658).

The spelling of 51245443 in words is "fifty-one million, two hundred forty-five thousand, four hundred forty-three".