71047579 has 2 divisors, whose sum is σ = 71047580. Its totient is φ = 71047578.

The previous prime is 71047549. The next prime is 71047583. The reversal of 71047579 is 97574017.

It is a strong prime.

It is an emirp because it is prime and its reverse (97574017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71047579 - 2⁷ = 71047451 is a prime.

It is a super-2 number, since 2×71047579² = 10095516963522482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71047549) 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, 35523789 + 35523790.

It is an arithmetic number, because the mean of its divisors is an integer number (35523790).

Almost surely, 2^71047579 is an apocalyptic number.

71047579 is a deficient number, since it is larger than the sum of its proper divisors (1).

71047579 is an equidigital number, since it uses as much as digits as its factorization.

71047579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 71047579 is about 8428.9725945693. The cubic root of 71047579 is about 414.1742500482.

The spelling of 71047579 in words is "seventy-one million, forty-seven thousand, five hundred seventy-nine".