71411491 has 2 divisors, whose sum is σ = 71411492. Its totient is φ = 71411490.

The previous prime is 71411477. The next prime is 71411533. The reversal of 71411491 is 19411417.

It is a weak prime.

It is an emirp because it is prime and its reverse (19411417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71411491 - 2¹⁹ = 70887203 is a prime.

It is not a weakly prime, because it can be changed into another prime (71411191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35705745 + 35705746.

It is an arithmetic number, because the mean of its divisors is an integer number (35705746).

Almost surely, 2^71411491 is an apocalyptic number.

71411491 is a deficient number, since it is larger than the sum of its proper divisors (1).

71411491 is an equidigital number, since it uses as much as digits as its factorization.

71411491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 28.

The square root of 71411491 is about 8450.5319950876. The cubic root of 71411491 is about 414.8801918634.

The spelling of 71411491 in words is "seventy-one million, four hundred eleven thousand, four hundred ninety-one".