51358243 has 2 divisors, whose sum is σ = 51358244. Its totient is φ = 51358242.

The previous prime is 51358189. The next prime is 51358253. The reversal of 51358243 is 34285315.

51358243 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 51358243 - 2¹³ = 51350051 is a prime.

It is not a weakly prime, because it can be changed into another prime (51358253) 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, 25679121 + 25679122.

It is an arithmetic number, because the mean of its divisors is an integer number (25679122).

Almost surely, 2^51358243 is an apocalyptic number.

51358243 is a deficient number, since it is larger than the sum of its proper divisors (1).

51358243 is an equidigital number, since it uses as much as digits as its factorization.

51358243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

The square root of 51358243 is about 7166.4665630979. The cubic root of 51358243 is about 371.7092647813.

The spelling of 51358243 in words is "fifty-one million, three hundred fifty-eight thousand, two hundred forty-three".