71036081 has 8 divisors (see below), whose sum is σ = 76246344. Its totient is φ = 65940480.

The previous prime is 71036057. The next prime is 71036083. The reversal of 71036081 is 18063017.

It can be written as a sum of positive squares in 4 ways, for example, as 11669056 + 59367025 = 3416^2 + 7705^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71036081 is a prime.

It is a super-2 number, since 2×71036081² = 10092249607677122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71036081.

It is not an unprimeable number, because it can be changed into a prime (71036083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27380 + ... + 29861.

It is an arithmetic number, because the mean of its divisors is an integer number (9530793).

Almost surely, 2^71036081 is an apocalyptic number.

It is an amenable number.

71036081 is a deficient number, since it is larger than the sum of its proper divisors (5210263).

71036081 is a wasteful number, since it uses less digits than its factorization.

71036081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57331.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 71036081 is about 8428.2905146892. The cubic root of 71036081 is about 414.1519061836.

Adding to 71036081 its reverse (18063017), we get a palindrome (89099098).

The spelling of 71036081 in words is "seventy-one million, thirty-six thousand, eighty-one".