71020801 has 2 divisors, whose sum is σ = 71020802. Its totient is φ = 71020800.

The previous prime is 71020787. The next prime is 71020811. The reversal of 71020801 is 10802017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63600625 + 7420176 = 7975^2 + 2724^2 .

It is a cyclic number.

It is not a de Polignac number, because 71020801 - 2¹³ = 71012609 is a prime.

It is not a weakly prime, because it can be changed into another prime (71020811) 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, 35510400 + 35510401.

It is an arithmetic number, because the mean of its divisors is an integer number (35510401).

Almost surely, 2^71020801 is an apocalyptic number.

It is an amenable number.

71020801 is a deficient number, since it is larger than the sum of its proper divisors (1).

71020801 is an equidigital number, since it uses as much as digits as its factorization.

71020801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 71020801 is about 8427.3839950485. The cubic root of 71020801 is about 414.1222090924.

Adding to 71020801 its reverse (10802017), we get a palindrome (81822818).

The spelling of 71020801 in words is "seventy-one million, twenty thousand, eight hundred one".