65531429 has 2 divisors, whose sum is σ = 65531430. Its totient is φ = 65531428.

The previous prime is 65531419. The next prime is 65531461. The reversal of 65531429 is 92413556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65044225 + 487204 = 8065^2 + 698^2 .

It is a cyclic number.

It is not a de Polignac number, because 65531429 - 2⁸ = 65531173 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65531419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32765714 + 32765715.

It is an arithmetic number, because the mean of its divisors is an integer number (32765715).

Almost surely, 2^65531429 is an apocalyptic number.

It is an amenable number.

65531429 is a deficient number, since it is larger than the sum of its proper divisors (1).

65531429 is an equidigital number, since it uses as much as digits as its factorization.

65531429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 65531429 is about 8095.1484853584. The cubic root of 65531429 is about 403.1653622147.

The spelling of 65531429 in words is "sixty-five million, five hundred thirty-one thousand, four hundred twenty-nine".