51385793 has 2 divisors, whose sum is σ = 51385794. Its totient is φ = 51385792.

The previous prime is 51385783. The next prime is 51385799. The reversal of 51385793 is 39758315.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26863489 + 24522304 = 5183^2 + 4952^2 .

It is a cyclic number.

It is not a de Polignac number, because 51385793 - 2¹⁰ = 51384769 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51385793.

It is not a weakly prime, because it can be changed into another prime (51385799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25692896 + 25692897.

It is an arithmetic number, because the mean of its divisors is an integer number (25692897).

Almost surely, 2^51385793 is an apocalyptic number.

It is an amenable number.

51385793 is a deficient number, since it is larger than the sum of its proper divisors (1).

51385793 is an equidigital number, since it uses as much as digits as its factorization.

51385793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 41.

The square root of 51385793 is about 7168.3884520860. The cubic root of 51385793 is about 371.7757179871.

The spelling of 51385793 in words is "fifty-one million, three hundred eighty-five thousand, seven hundred ninety-three".