75310913 has 2 divisors, whose sum is σ = 75310914. Its totient is φ = 75310912.

The previous prime is 75310909. The next prime is 75310919. The reversal of 75310913 is 31901357.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49168144 + 26142769 = 7012^2 + 5113^2 .

It is a cyclic number.

It is not a de Polignac number, because 75310913 - 2² = 75310909 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (75310919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37655456 + 37655457.

It is an arithmetic number, because the mean of its divisors is an integer number (37655457).

Almost surely, 2^75310913 is an apocalyptic number.

It is an amenable number.

75310913 is a deficient number, since it is larger than the sum of its proper divisors (1).

75310913 is an equidigital number, since it uses as much as digits as its factorization.

75310913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 75310913 is about 8678.1860431775. The cubic root of 75310913 is about 422.2982718687.

The spelling of 75310913 in words is "seventy-five million, three hundred ten thousand, nine hundred thirteen".