65321129 has 2 divisors, whose sum is σ = 65321130. Its totient is φ = 65321128.

The previous prime is 65321059. The next prime is 65321141. The reversal of 65321129 is 92112356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61653904 + 3667225 = 7852^2 + 1915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65321129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65321149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32660564 + 32660565.

It is an arithmetic number, because the mean of its divisors is an integer number (32660565).

Almost surely, 2^65321129 is an apocalyptic number.

It is an amenable number.

65321129 is a deficient number, since it is larger than the sum of its proper divisors (1).

65321129 is an equidigital number, since it uses as much as digits as its factorization.

65321129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 65321129 is about 8082.1487860593. The cubic root of 65321129 is about 402.7336277244.

The spelling of 65321129 in words is "sixty-five million, three hundred twenty-one thousand, one hundred twenty-nine".