51007717 has 2 divisors, whose sum is σ = 51007718. Its totient is φ = 51007716.

The previous prime is 51007711. The next prime is 51007729. The reversal of 51007717 is 71770015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44702596 + 6305121 = 6686^2 + 2511^2 .

It is a cyclic number.

It is not a de Polignac number, because 51007717 - 2³ = 51007709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51007711) 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, 25503858 + 25503859.

It is an arithmetic number, because the mean of its divisors is an integer number (25503859).

Almost surely, 2^51007717 is an apocalyptic number.

It is an amenable number.

51007717 is a deficient number, since it is larger than the sum of its proper divisors (1).

51007717 is an equidigital number, since it uses as much as digits as its factorization.

51007717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1715, while the sum is 28.

The square root of 51007717 is about 7141.9687061762. The cubic root of 51007717 is about 370.8616805274.

The spelling of 51007717 in words is "fifty-one million, seven thousand, seven hundred seventeen".