71726201 has 2 divisors, whose sum is σ = 71726202. Its totient is φ = 71726200.

The previous prime is 71726189. The next prime is 71726203. The reversal of 71726201 is 10262717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69973225 + 1752976 = 8365^2 + 1324^2 .

It is a cyclic number.

It is not a de Polignac number, because 71726201 - 2²² = 67531897 is a prime.

Together with 71726203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71726203) 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, 35863100 + 35863101.

It is an arithmetic number, because the mean of its divisors is an integer number (35863101).

Almost surely, 2^71726201 is an apocalyptic number.

It is an amenable number.

71726201 is a deficient number, since it is larger than the sum of its proper divisors (1).

71726201 is an equidigital number, since it uses as much as digits as its factorization.

71726201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 71726201 is about 8469.1322459860. The cubic root of 71726201 is about 415.4887569043.

Adding to 71726201 its reverse (10262717), we get a palindrome (81988918).

The spelling of 71726201 in words is "seventy-one million, seven hundred twenty-six thousand, two hundred one".