75655133 has 2 divisors, whose sum is σ = 75655134. Its totient is φ = 75655132.

The previous prime is 75655109. The next prime is 75655141. The reversal of 75655133 is 33155657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74011609 + 1643524 = 8603^2 + 1282^2 .

It is an emirp because it is prime and its reverse (33155657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75655133 - 2⁸ = 75654877 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 75655093 and 75655102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75655183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37827566 + 37827567.

It is an arithmetic number, because the mean of its divisors is an integer number (37827567).

Almost surely, 2^75655133 is an apocalyptic number.

It is an amenable number.

75655133 is a deficient number, since it is larger than the sum of its proper divisors (1).

75655133 is an equidigital number, since it uses as much as digits as its factorization.

75655133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47250, while the sum is 35.

The square root of 75655133 is about 8697.9959186010. The cubic root of 75655133 is about 422.9406869686.

The spelling of 75655133 in words is "seventy-five million, six hundred fifty-five thousand, one hundred thirty-three".