71145163 has 2 divisors, whose sum is σ = 71145164. Its totient is φ = 71145162.

The previous prime is 71145121. The next prime is 71145181. The reversal of 71145163 is 36154117.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71145163 - 2⁹ = 71144651 is a prime.

It is not a weakly prime, because it can be changed into another prime (71148163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35572581 + 35572582.

It is an arithmetic number, because the mean of its divisors is an integer number (35572582).

Almost surely, 2^71145163 is an apocalyptic number.

71145163 is a deficient number, since it is larger than the sum of its proper divisors (1).

71145163 is an equidigital number, since it uses as much as digits as its factorization.

71145163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 71145163 is about 8434.7592141092. The cubic root of 71145163 is about 414.3637863679.

The spelling of 71145163 in words is "seventy-one million, one hundred forty-five thousand, one hundred sixty-three".