71080001 has 2 divisors, whose sum is σ = 71080002. Its totient is φ = 71080000.

The previous prime is 71079949. The next prime is 71080021. The reversal of 71080001 is 10008017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44289025 + 26790976 = 6655^2 + 5176^2 .

It is a cyclic number.

It is not a de Polignac number, because 71080001 - 2¹⁰ = 71078977 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (71080021) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35540000 + 35540001.

It is an arithmetic number, because the mean of its divisors is an integer number (35540001).

Almost surely, 2^71080001 is an apocalyptic number.

It is an amenable number.

71080001 is a deficient number, since it is larger than the sum of its proper divisors (1).

71080001 is an equidigital number, since it uses as much as digits as its factorization.

71080001 is an evil number, because the sum of its binary digits is even.

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

The square root of 71080001 is about 8430.8956226489. The cubic root of 71080001 is about 414.2372421801.

Adding to 71080001 its reverse (10008017), we get a palindrome (81088018).

The spelling of 71080001 in words is "seventy-one million, eighty thousand, one".