71314561 has 2 divisors, whose sum is σ = 71314562. Its totient is φ = 71314560.

The previous prime is 71314549. The next prime is 71314571. The reversal of 71314561 is 16541317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37442161 + 33872400 = 6119^2 + 5820^2 .

It is a cyclic number.

It is not a de Polignac number, because 71314561 - 2⁷ = 71314433 is a prime.

It is a super-2 number, since 2×71314561² = 10171533221245442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71314531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35657280 + 35657281.

It is an arithmetic number, because the mean of its divisors is an integer number (35657281).

Almost surely, 2^71314561 is an apocalyptic number.

It is an amenable number.

71314561 is a deficient number, since it is larger than the sum of its proper divisors (1).

71314561 is an equidigital number, since it uses as much as digits as its factorization.

71314561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 71314561 is about 8444.7949057393. The cubic root of 71314561 is about 414.6923950766.

Adding to 71314561 its reverse (16541317), we get a palindrome (87855878).

The spelling of 71314561 in words is "seventy-one million, three hundred fourteen thousand, five hundred sixty-one".