71126563 has 2 divisors, whose sum is σ = 71126564. Its totient is φ = 71126562.

The previous prime is 71126537. The next prime is 71126579. The reversal of 71126563 is 36562117.

It is a strong prime.

It is an emirp because it is prime and its reverse (36562117) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71126563 is a prime.

It is not a weakly prime, because it can be changed into another prime (71126663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35563281 + 35563282.

It is an arithmetic number, because the mean of its divisors is an integer number (35563282).

Almost surely, 2^71126563 is an apocalyptic number.

71126563 is a deficient number, since it is larger than the sum of its proper divisors (1).

71126563 is an equidigital number, since it uses as much as digits as its factorization.

71126563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 71126563 is about 8433.6565616582. The cubic root of 71126563 is about 414.3276731694.

The spelling of 71126563 in words is "seventy-one million, one hundred twenty-six thousand, five hundred sixty-three".