75475993 has 2 divisors, whose sum is σ = 75475994. Its totient is φ = 75475992.

The previous prime is 75475919. The next prime is 75475997. The reversal of 75475993 is 39957457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63552784 + 11923209 = 7972^2 + 3453^2 .

It is an emirp because it is prime and its reverse (39957457) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75475993 is a prime.

It is not a weakly prime, because it can be changed into another prime (75475997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37737996 + 37737997.

It is an arithmetic number, because the mean of its divisors is an integer number (37737997).

Almost surely, 2^75475993 is an apocalyptic number.

It is an amenable number.

75475993 is a deficient number, since it is larger than the sum of its proper divisors (1).

75475993 is an equidigital number, since it uses as much as digits as its factorization.

75475993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1190700, while the sum is 49.

The square root of 75475993 is about 8687.6920410429. The cubic root of 75475993 is about 422.6066031201.

The spelling of 75475993 in words is "seventy-five million, four hundred seventy-five thousand, nine hundred ninety-three".