71315653 has 2 divisors, whose sum is σ = 71315654. Its totient is φ = 71315652.

The previous prime is 71315641. The next prime is 71315681. The reversal of 71315653 is 35651317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70862724 + 452929 = 8418^2 + 673^2 .

It is a cyclic number.

It is not a de Polignac number, because 71315653 - 2⁹ = 71315141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71315633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35657826 + 35657827.

It is an arithmetic number, because the mean of its divisors is an integer number (35657827).

Almost surely, 2^71315653 is an apocalyptic number.

It is an amenable number.

71315653 is a deficient number, since it is larger than the sum of its proper divisors (1).

71315653 is an equidigital number, since it uses as much as digits as its factorization.

71315653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 31.

The square root of 71315653 is about 8444.8595607032. The cubic root of 71315653 is about 414.6945117168.

The spelling of 71315653 in words is "seventy-one million, three hundred fifteen thousand, six hundred fifty-three".