75755993 has 2 divisors, whose sum is σ = 75755994. Its totient is φ = 75755992.

The previous prime is 75755957. The next prime is 75756001. The reversal of 75755993 is 39955757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71961289 + 3794704 = 8483^2 + 1948^2 .

It is an emirp because it is prime and its reverse (39955757) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75755993 - 2⁸ = 75755737 is a prime.

It is not a weakly prime, because it can be changed into another prime (75755903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37877996 + 37877997.

It is an arithmetic number, because the mean of its divisors is an integer number (37877997).

Almost surely, 2^75755993 is an apocalyptic number.

It is an amenable number.

75755993 is a deficient number, since it is larger than the sum of its proper divisors (1).

75755993 is an equidigital number, since it uses as much as digits as its factorization.

75755993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1488375, while the sum is 50.

The square root of 75755993 is about 8703.7918748095. The cubic root of 75755993 is about 423.1285519710.

The spelling of 75755993 in words is "seventy-five million, seven hundred fifty-five thousand, nine hundred ninety-three".