71814529 has 2 divisors, whose sum is σ = 71814530. Its totient is φ = 71814528.

The previous prime is 71814473. The next prime is 71814539. The reversal of 71814529 is 92541817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71436304 + 378225 = 8452^2 + 615^2 .

It is an emirp because it is prime and its reverse (92541817) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71814529 - 2¹³ = 71806337 is a prime.

It is not a weakly prime, because it can be changed into another prime (71814539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35907264 + 35907265.

It is an arithmetic number, because the mean of its divisors is an integer number (35907265).

Almost surely, 2^71814529 is an apocalyptic number.

It is an amenable number.

71814529 is a deficient number, since it is larger than the sum of its proper divisors (1).

71814529 is an equidigital number, since it uses as much as digits as its factorization.

71814529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 71814529 is about 8474.3453434469. The cubic root of 71814529 is about 415.6592396388.

The spelling of 71814529 in words is "seventy-one million, eight hundred fourteen thousand, five hundred twenty-nine".