71000801 has 2 divisors, whose sum is σ = 71000802. Its totient is φ = 71000800.

The previous prime is 71000791. The next prime is 71000803. The reversal of 71000801 is 10800017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68973025 + 2027776 = 8305^2 + 1424^2 .

It is an emirp because it is prime and its reverse (10800017) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71000801 is a prime.

It is a super-2 number, since 2×71000801² = 10082227485283202, which contains 22 as substring.

Together with 71000803, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71000801.

It is not a weakly prime, because it can be changed into another prime (71000803) 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, 35500400 + 35500401.

It is an arithmetic number, because the mean of its divisors is an integer number (35500401).

Almost surely, 2^71000801 is an apocalyptic number.

It is an amenable number.

71000801 is a deficient number, since it is larger than the sum of its proper divisors (1).

71000801 is an equidigital number, since it uses as much as digits as its factorization.

71000801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 71000801 is about 8426.1973036477. The cubic root of 71000801 is about 414.0833321172.

Adding to 71000801 its reverse (10800017), we get a palindrome (81800818).

The spelling of 71000801 in words is "seventy-one million, eight hundred one", and thus it is an aban number.