51214717 has 2 divisors, whose sum is σ = 51214718. Its totient is φ = 51214716.

The previous prime is 51214711. The next prime is 51214741. The reversal of 51214717 is 71741215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34739236 + 16475481 = 5894^2 + 4059^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51214717 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 (51214711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25607358 + 25607359.

It is an arithmetic number, because the mean of its divisors is an integer number (25607359).

Almost surely, 2^51214717 is an apocalyptic number.

It is an amenable number.

51214717 is a deficient number, since it is larger than the sum of its proper divisors (1).

51214717 is an equidigital number, since it uses as much as digits as its factorization.

51214717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1960, while the sum is 28.

The square root of 51214717 is about 7156.4458357484. The cubic root of 51214717 is about 371.3626815426.

The spelling of 51214717 in words is "fifty-one million, two hundred fourteen thousand, seven hundred seventeen".