51323543 has 2 divisors, whose sum is σ = 51323544. Its totient is φ = 51323542.

The previous prime is 51323521. The next prime is 51323563. The reversal of 51323543 is 34532315.

51323543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51323543 - 2⁸ = 51323287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51323563) 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, 25661771 + 25661772.

It is an arithmetic number, because the mean of its divisors is an integer number (25661772).

Almost surely, 2^51323543 is an apocalyptic number.

51323543 is a deficient number, since it is larger than the sum of its proper divisors (1).

51323543 is an equidigital number, since it uses as much as digits as its factorization.

51323543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 26.

The square root of 51323543 is about 7164.0451561949. The cubic root of 51323543 is about 371.6255312738.

Adding to 51323543 its reverse (34532315), we get a palindrome (85855858).

The spelling of 51323543 in words is "fifty-one million, three hundred twenty-three thousand, five hundred forty-three".