71136601 has 2 divisors, whose sum is σ = 71136602. Its totient is φ = 71136600.

The previous prime is 71136523. The next prime is 71136629. The reversal of 71136601 is 10663117.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50751376 + 20385225 = 7124^2 + 4515^2 .

It is a cyclic number.

It is not a de Polignac number, because 71136601 - 2²⁵ = 37582169 is a prime.

It is not a weakly prime, because it can be changed into another prime (71136671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35568300 + 35568301.

It is an arithmetic number, because the mean of its divisors is an integer number (35568301).

Almost surely, 2^71136601 is an apocalyptic number.

It is an amenable number.

71136601 is a deficient number, since it is larger than the sum of its proper divisors (1).

71136601 is an equidigital number, since it uses as much as digits as its factorization.

71136601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 71136601 is about 8434.2516561933. The cubic root of 71136601 is about 414.3471634291.

Adding to 71136601 its reverse (10663117), we get a palindrome (81799718).

The spelling of 71136601 in words is "seventy-one million, one hundred thirty-six thousand, six hundred one".