71481043 has 2 divisors, whose sum is σ = 71481044. Its totient is φ = 71481042.

The previous prime is 71481023. The next prime is 71481049. The reversal of 71481043 is 34018417.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71481043 is a prime.

It is not a weakly prime, because it can be changed into another prime (71481049) 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, 35740521 + 35740522.

It is an arithmetic number, because the mean of its divisors is an integer number (35740522).

Almost surely, 2^71481043 is an apocalyptic number.

71481043 is a deficient number, since it is larger than the sum of its proper divisors (1).

71481043 is an equidigital number, since it uses as much as digits as its factorization.

71481043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 71481043 is about 8454.6462374247. The cubic root of 71481043 is about 415.0148405202.

The spelling of 71481043 in words is "seventy-one million, four hundred eighty-one thousand, forty-three".