71043433 has 2 divisors, whose sum is σ = 71043434. Its totient is φ = 71043432.

The previous prime is 71043409. The next prime is 71043437. The reversal of 71043433 is 33434017.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58568409 + 12475024 = 7653^2 + 3532^2 .

It is an emirp because it is prime and its reverse (33434017) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71043433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71043398 and 71043407.

It is not a weakly prime, because it can be changed into another prime (71043437) 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, 35521716 + 35521717.

It is an arithmetic number, because the mean of its divisors is an integer number (35521717).

Almost surely, 2^71043433 is an apocalyptic number.

It is an amenable number.

71043433 is a deficient number, since it is larger than the sum of its proper divisors (1).

71043433 is an equidigital number, since it uses as much as digits as its factorization.

71043433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 71043433 is about 8428.7266535343. The cubic root of 71043433 is about 414.1661934760.

The spelling of 71043433 in words is "seventy-one million, forty-three thousand, four hundred thirty-three".