75499493 has 2 divisors, whose sum is σ = 75499494. Its totient is φ = 75499492.

The previous prime is 75499471. The next prime is 75499511. The reversal of 75499493 is 39499457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64754209 + 10745284 = 8047^2 + 3278^2 .

It is an emirp because it is prime and its reverse (39499457) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75499493 - 2⁶ = 75499429 is a prime.

It is a Sophie Germain 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 (75499433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37749746 + 37749747.

It is an arithmetic number, because the mean of its divisors is an integer number (37749747).

Almost surely, 2^75499493 is an apocalyptic number.

It is an amenable number.

75499493 is a deficient number, since it is larger than the sum of its proper divisors (1).

75499493 is an equidigital number, since it uses as much as digits as its factorization.

75499493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 50.

The square root of 75499493 is about 8689.0444238708. The cubic root of 75499493 is about 422.6504591165.

The spelling of 75499493 in words is "seventy-five million, four hundred ninety-nine thousand, four hundred ninety-three".