71435081 has 2 divisors, whose sum is σ = 71435082. Its totient is φ = 71435080.

The previous prime is 71435059. The next prime is 71435093. The reversal of 71435081 is 18053417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51552400 + 19882681 = 7180^2 + 4459^2 .

It is an emirp because it is prime and its reverse (18053417) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71435081 is a prime.

It is a super-2 number, since 2×71435081² = 10205941594953122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71435011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35717540 + 35717541.

It is an arithmetic number, because the mean of its divisors is an integer number (35717541).

Almost surely, 2^71435081 is an apocalyptic number.

It is an amenable number.

71435081 is a deficient number, since it is larger than the sum of its proper divisors (1).

71435081 is an equidigital number, since it uses as much as digits as its factorization.

71435081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 71435081 is about 8451.9276499506. The cubic root of 71435081 is about 414.9258705355.

Adding to 71435081 its reverse (18053417), we get a palindrome (89488498).

The spelling of 71435081 in words is "seventy-one million, four hundred thirty-five thousand, eighty-one".