71797129 has 2 divisors, whose sum is σ = 71797130. Its totient is φ = 71797128.

The previous prime is 71797123. The next prime is 71797151. The reversal of 71797129 is 92179717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70107129 + 1690000 = 8373^2 + 1300^2 .

It is a cyclic number.

It is not a de Polignac number, because 71797129 - 2⁵ = 71797097 is a prime.

It is a super-3 number, since 3×71797129³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (71797123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35898564 + 35898565.

It is an arithmetic number, because the mean of its divisors is an integer number (35898565).

Almost surely, 2^71797129 is an apocalyptic number.

It is an amenable number.

71797129 is a deficient number, since it is larger than the sum of its proper divisors (1).

71797129 is an equidigital number, since it uses as much as digits as its factorization.

71797129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55566, while the sum is 43.

The square root of 71797129 is about 8473.3186532787. The cubic root of 71797129 is about 415.6256667900.

The spelling of 71797129 in words is "seventy-one million, seven hundred ninety-seven thousand, one hundred twenty-nine".