51443123 has 2 divisors, whose sum is σ = 51443124. Its totient is φ = 51443122.

The previous prime is 51443101. The next prime is 51443143. The reversal of 51443123 is 32134415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51443123 - 2⁶ = 51443059 is a prime.

It is not a weakly prime, because it can be changed into another prime (51443143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25721561 + 25721562.

It is an arithmetic number, because the mean of its divisors is an integer number (25721562).

Almost surely, 2^51443123 is an apocalyptic number.

51443123 is a deficient number, since it is larger than the sum of its proper divisors (1).

51443123 is an equidigital number, since it uses as much as digits as its factorization.

51443123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 51443123 is about 7172.3861440946. The cubic root of 51443123 is about 371.9139272670.

Adding to 51443123 its reverse (32134415), we get a palindrome (83577538).

The spelling of 51443123 in words is "fifty-one million, four hundred forty-three thousand, one hundred twenty-three".