71244011 has 2 divisors, whose sum is σ = 71244012. Its totient is φ = 71244010.

The previous prime is 71244007. The next prime is 71244013. The reversal of 71244011 is 11044217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71244011 - 2² = 71244007 is a prime.

It is a Sophie Germain prime.

Together with 71244013, 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 (71244013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35622005 + 35622006.

It is an arithmetic number, because the mean of its divisors is an integer number (35622006).

Almost surely, 2^71244011 is an apocalyptic number.

71244011 is a deficient number, since it is larger than the sum of its proper divisors (1).

71244011 is an equidigital number, since it uses as much as digits as its factorization.

71244011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 71244011 is about 8440.6167428690. The cubic root of 71244011 is about 414.5556011270. Note that the first 3 decimals are identical.

Adding to 71244011 its reverse (11044217), we get a palindrome (82288228).

The spelling of 71244011 in words is "seventy-one million, two hundred forty-four thousand, eleven".