71353081 has 2 divisors, whose sum is σ = 71353082. Its totient is φ = 71353080.

The previous prime is 71353049. The next prime is 71353091. The reversal of 71353081 is 18035317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44675856 + 26677225 = 6684^2 + 5165^2 .

It is a cyclic number.

It is not a de Polignac number, because 71353081 - 2⁵ = 71353049 is a prime.

It is a super-2 number, since 2×71353081² = 10182524336385122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71353001) 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, 35676540 + 35676541.

It is an arithmetic number, because the mean of its divisors is an integer number (35676541).

Almost surely, 2^71353081 is an apocalyptic number.

It is an amenable number.

71353081 is a deficient number, since it is larger than the sum of its proper divisors (1).

71353081 is an equidigital number, since it uses as much as digits as its factorization.

71353081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 71353081 is about 8447.0752926679. The cubic root of 71353081 is about 414.7670459176.

Adding to 71353081 its reverse (18035317), we get a palindrome (89388398).

The spelling of 71353081 in words is "seventy-one million, three hundred fifty-three thousand, eighty-one".