51004717 has 2 divisors, whose sum is σ = 51004718. Its totient is φ = 51004716.

The previous prime is 51004711. The next prime is 51004739. The reversal of 51004717 is 71740015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26739241 + 24265476 = 5171^2 + 4926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51004717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51004691 and 51004700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51004711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25502358 + 25502359.

It is an arithmetic number, because the mean of its divisors is an integer number (25502359).

Almost surely, 2^51004717 is an apocalyptic number.

It is an amenable number.

51004717 is a deficient number, since it is larger than the sum of its proper divisors (1).

51004717 is an equidigital number, since it uses as much as digits as its factorization.

51004717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 51004717 is about 7141.7586769647. The cubic root of 51004717 is about 370.8544096874.

The spelling of 51004717 in words is "fifty-one million, four thousand, seven hundred seventeen".