51318793 has 2 divisors, whose sum is σ = 51318794. Its totient is φ = 51318792.

The previous prime is 51318779. The next prime is 51318803. The reversal of 51318793 is 39781315.

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., 47169424 + 4149369 = 6868^2 + 2037^2 .

It is a cyclic number.

It is not a de Polignac number, because 51318793 - 2²⁵ = 17764361 is a prime.

It is not a weakly prime, because it can be changed into another prime (51318703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25659396 + 25659397.

It is an arithmetic number, because the mean of its divisors is an integer number (25659397).

Almost surely, 2^51318793 is an apocalyptic number.

It is an amenable number.

51318793 is a deficient number, since it is larger than the sum of its proper divisors (1).

51318793 is an equidigital number, since it uses as much as digits as its factorization.

51318793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 51318793 is about 7163.7136319091. The cubic root of 51318793 is about 371.6140662577.

It can be divided in two parts, 5131 and 8793, that added together give a square (13924 = 118²).

The spelling of 51318793 in words is "fifty-one million, three hundred eighteen thousand, seven hundred ninety-three".