51075839 has 2 divisors, whose sum is σ = 51075840. Its totient is φ = 51075838.

The previous prime is 51075823. The next prime is 51075851. The reversal of 51075839 is 93857015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51075839 - 2⁴ = 51075823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51075809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25537919 + 25537920.

It is an arithmetic number, because the mean of its divisors is an integer number (25537920).

Almost surely, 2^51075839 is an apocalyptic number.

51075839 is a deficient number, since it is larger than the sum of its proper divisors (1).

51075839 is an equidigital number, since it uses as much as digits as its factorization.

51075839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 51075839 is about 7146.7362481065. The cubic root of 51075839 is about 371.0267052361.

The spelling of 51075839 in words is "fifty-one million, seventy-five thousand, eight hundred thirty-nine".