71481727 has 2 divisors, whose sum is σ = 71481728. Its totient is φ = 71481726.

The previous prime is 71481713. The next prime is 71481731. The reversal of 71481727 is 72718417.

It is a strong prime.

It is an emirp because it is prime and its reverse (72718417) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71481727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71481757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35740863 + 35740864.

It is an arithmetic number, because the mean of its divisors is an integer number (35740864).

Almost surely, 2^71481727 is an apocalyptic number.

71481727 is a deficient number, since it is larger than the sum of its proper divisors (1).

71481727 is an equidigital number, since it uses as much as digits as its factorization.

71481727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21952, while the sum is 37.

The square root of 71481727 is about 8454.6866884587. The cubic root of 71481727 is about 415.0161642710.

The spelling of 71481727 in words is "seventy-one million, four hundred eighty-one thousand, seven hundred twenty-seven".