51193243 has 2 divisors, whose sum is σ = 51193244. Its totient is φ = 51193242.

The previous prime is 51193217. The next prime is 51193249. The reversal of 51193243 is 34239115.

51193243 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 51193243 - 2⁵ = 51193211 is a prime.

It is not a weakly prime, because it can be changed into another prime (51193249) 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, 25596621 + 25596622.

It is an arithmetic number, because the mean of its divisors is an integer number (25596622).

Almost surely, 2^51193243 is an apocalyptic number.

51193243 is a deficient number, since it is larger than the sum of its proper divisors (1).

51193243 is an equidigital number, since it uses as much as digits as its factorization.

51193243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 51193243 is about 7154.9453526914. The cubic root of 51193243 is about 371.3107709622.

The spelling of 51193243 in words is "fifty-one million, one hundred ninety-three thousand, two hundred forty-three".