71211163 has 2 divisors, whose sum is σ = 71211164. Its totient is φ = 71211162.

The previous prime is 71211149. The next prime is 71211167. The reversal of 71211163 is 36111217.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71211163 is a prime.

It is not a weakly prime, because it can be changed into another prime (71211167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35605581 + 35605582.

It is an arithmetic number, because the mean of its divisors is an integer number (35605582).

Almost surely, 2^71211163 is an apocalyptic number.

71211163 is a deficient number, since it is larger than the sum of its proper divisors (1).

71211163 is an equidigital number, since it uses as much as digits as its factorization.

71211163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 22.

The square root of 71211163 is about 8438.6706891548. The cubic root of 71211163 is about 414.4918792059.

The spelling of 71211163 in words is "seventy-one million, two hundred eleven thousand, one hundred sixty-three".