71157011 has 2 divisors, whose sum is σ = 71157012. Its totient is φ = 71157010.

The previous prime is 71156993. The next prime is 71157041. The reversal of 71157011 is 11075117.

It is a weak prime.

It is an emirp because it is prime and its reverse (11075117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71157011 - 2¹⁴ = 71140627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (71157041) 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, 35578505 + 35578506.

It is an arithmetic number, because the mean of its divisors is an integer number (35578506).

Almost surely, 2^71157011 is an apocalyptic number.

71157011 is a deficient number, since it is larger than the sum of its proper divisors (1).

71157011 is an equidigital number, since it uses as much as digits as its factorization.

71157011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 245, while the sum is 23.

The square root of 71157011 is about 8435.4615167162. The cubic root of 71157011 is about 414.3867868055.

The spelling of 71157011 in words is "seventy-one million, one hundred fifty-seven thousand, eleven".