71973241 has 2 divisors, whose sum is σ = 71973242. Its totient is φ = 71973240.

The previous prime is 71973221. The next prime is 71973247. The reversal of 71973241 is 14237917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63936016 + 8037225 = 7996^2 + 2835^2 .

It is an emirp because it is prime and its reverse (14237917) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71973241 - 2⁷ = 71973113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71973197 and 71973206.

It is not a weakly prime, because it can be changed into another prime (71973247) 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, 35986620 + 35986621.

It is an arithmetic number, because the mean of its divisors is an integer number (35986621).

Almost surely, 2^71973241 is an apocalyptic number.

It is an amenable number.

71973241 is a deficient number, since it is larger than the sum of its proper divisors (1).

71973241 is an equidigital number, since it uses as much as digits as its factorization.

71973241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 34.

The square root of 71973241 is about 8483.7044385103. The cubic root of 71973241 is about 415.9652202956.

The spelling of 71973241 in words is "seventy-one million, nine hundred seventy-three thousand, two hundred forty-one".