71046109 has 2 divisors, whose sum is σ = 71046110. Its totient is φ = 71046108.

The previous prime is 71046061. The next prime is 71046113. The reversal of 71046109 is 90164017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55086084 + 15960025 = 7422^2 + 3995^2 .

It is a cyclic number.

It is not a de Polignac number, because 71046109 - 2⁷ = 71045981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71046139) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35523054 + 35523055.

It is an arithmetic number, because the mean of its divisors is an integer number (35523055).

Almost surely, 2^71046109 is an apocalyptic number.

It is an amenable number.

71046109 is a deficient number, since it is larger than the sum of its proper divisors (1).

71046109 is an equidigital number, since it uses as much as digits as its factorization.

71046109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 71046109 is about 8428.8853948787. The cubic root of 71046109 is about 414.1713935570.

The spelling of 71046109 in words is "seventy-one million, forty-six thousand, one hundred nine".