75165133 has 2 divisors, whose sum is σ = 75165134. Its totient is φ = 75165132.

The previous prime is 75165131. The next prime is 75165151. The reversal of 75165133 is 33156157.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46199209 + 28965924 = 6797^2 + 5382^2 .

It is an emirp because it is prime and its reverse (33156157) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75165133 - 2¹ = 75165131 is a prime.

Together with 75165131, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 75165095 and 75165104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75165131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37582566 + 37582567.

It is an arithmetic number, because the mean of its divisors is an integer number (37582567).

Almost surely, 2^75165133 is an apocalyptic number.

It is an amenable number.

75165133 is a deficient number, since it is larger than the sum of its proper divisors (1).

75165133 is an equidigital number, since it uses as much as digits as its factorization.

75165133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 31.

The square root of 75165133 is about 8669.7827539103. The cubic root of 75165133 is about 422.0256136980.

The spelling of 75165133 in words is "seventy-five million, one hundred sixty-five thousand, one hundred thirty-three".