71541611 has 2 divisors, whose sum is σ = 71541612. Its totient is φ = 71541610.

The previous prime is 71541607. The next prime is 71541623. The reversal of 71541611 is 11614517.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71541611 - 2² = 71541607 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (71541641) 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, 35770805 + 35770806.

It is an arithmetic number, because the mean of its divisors is an integer number (35770806).

Almost surely, 2^71541611 is an apocalyptic number.

71541611 is a deficient number, since it is larger than the sum of its proper divisors (1).

71541611 is an equidigital number, since it uses as much as digits as its factorization.

71541611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 26.

The square root of 71541611 is about 8458.2274147720. The cubic root of 71541611 is about 415.1320255411.

The spelling of 71541611 in words is "seventy-one million, five hundred forty-one thousand, six hundred eleven".