71225717 has 2 divisors, whose sum is σ = 71225718. Its totient is φ = 71225716.

The previous prime is 71225701. The next prime is 71225729. The reversal of 71225717 is 71752217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66031876 + 5193841 = 8126^2 + 2279^2 .

It is a cyclic number.

It is not a de Polignac number, because 71225717 - 2⁴ = 71225701 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 (71225747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35612858 + 35612859.

It is an arithmetic number, because the mean of its divisors is an integer number (35612859).

Almost surely, 2^71225717 is an apocalyptic number.

It is an amenable number.

71225717 is a deficient number, since it is larger than the sum of its proper divisors (1).

71225717 is an equidigital number, since it uses as much as digits as its factorization.

71225717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6860, while the sum is 32.

The square root of 71225717 is about 8439.5329847095. The cubic root of 71225717 is about 414.5201149657.

The spelling of 71225717 in words is "seventy-one million, two hundred twenty-five thousand, seven hundred seventeen".