71050517 has 2 divisors, whose sum is σ = 71050518. Its totient is φ = 71050516.

The previous prime is 71050513. The next prime is 71050523. The reversal of 71050517 is 71505017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61058596 + 9991921 = 7814^2 + 3161^2 .

It is an emirp because it is prime and its reverse (71505017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71050517 - 2² = 71050513 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71050513) 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, 35525258 + 35525259.

It is an arithmetic number, because the mean of its divisors is an integer number (35525259).

Almost surely, 2^71050517 is an apocalyptic number.

It is an amenable number.

71050517 is a deficient number, since it is larger than the sum of its proper divisors (1).

71050517 is an equidigital number, since it uses as much as digits as its factorization.

71050517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1225, while the sum is 26.

The square root of 71050517 is about 8429.1468726082. The cubic root of 71050517 is about 414.1799590261.

The spelling of 71050517 in words is "seventy-one million, fifty thousand, five hundred seventeen".