75719321 has 2 divisors, whose sum is σ = 75719322. Its totient is φ = 75719320.

The previous prime is 75719311. The next prime is 75719339. The reversal of 75719321 is 12391757.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68293696 + 7425625 = 8264^2 + 2725^2 .

It is a cyclic number.

It is not a de Polignac number, because 75719321 - 2⁶ = 75719257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (75719311) 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, 37859660 + 37859661.

It is an arithmetic number, because the mean of its divisors is an integer number (37859661).

Almost surely, 2^75719321 is an apocalyptic number.

It is an amenable number.

75719321 is a deficient number, since it is larger than the sum of its proper divisors (1).

75719321 is an equidigital number, since it uses as much as digits as its factorization.

75719321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13230, while the sum is 35.

The square root of 75719321 is about 8701.6849517780. The cubic root of 75719321 is about 423.0602648554.

The spelling of 75719321 in words is "seventy-five million, seven hundred nineteen thousand, three hundred twenty-one".