71144651 has 2 divisors, whose sum is σ = 71144652. Its totient is φ = 71144650.

The previous prime is 71144641. The next prime is 71144653. The reversal of 71144651 is 15644117.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71144651 - 2¹⁰ = 71143627 is a prime.

It is a super-2 number, since 2×71144651² = 10123122731823602, which contains 22 as substring.

Together with 71144653, 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 (71144653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35572325 + 35572326.

It is an arithmetic number, because the mean of its divisors is an integer number (35572326).

Almost surely, 2^71144651 is an apocalyptic number.

71144651 is a deficient number, since it is larger than the sum of its proper divisors (1).

71144651 is an equidigital number, since it uses as much as digits as its factorization.

71144651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 71144651 is about 8434.7288634549. The cubic root of 71144651 is about 414.3627923684.

Adding to 71144651 its reverse (15644117), we get a palindrome (86788768).

The spelling of 71144651 in words is "seventy-one million, one hundred forty-four thousand, six hundred fifty-one".