51538043 has 2 divisors, whose sum is σ = 51538044. Its totient is φ = 51538042.

The previous prime is 51538021. The next prime is 51538049. The reversal of 51538043 is 34083515.

51538043 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 51538043 - 2¹⁰ = 51537019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51537997 and 51538015.

It is not a weakly prime, because it can be changed into another prime (51538049) 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, 25769021 + 25769022.

It is an arithmetic number, because the mean of its divisors is an integer number (25769022).

Almost surely, 2^51538043 is an apocalyptic number.

51538043 is a deficient number, since it is larger than the sum of its proper divisors (1).

51538043 is an equidigital number, since it uses as much as digits as its factorization.

51538043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 51538043 is about 7179.0001392952. Note that the first 3 decimals coincide. The cubic root of 51538043 is about 372.1425317119.

The spelling of 51538043 in words is "fifty-one million, five hundred thirty-eight thousand, forty-three".