75727133 has 2 divisors, whose sum is σ = 75727134. Its totient is φ = 75727132.

The previous prime is 75727111. The next prime is 75727139. The reversal of 75727133 is 33172757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55323844 + 20403289 = 7438^2 + 4517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75727133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 75727093 and 75727102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75727139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37863566 + 37863567.

It is an arithmetic number, because the mean of its divisors is an integer number (37863567).

Almost surely, 2^75727133 is an apocalyptic number.

It is an amenable number.

75727133 is a deficient number, since it is larger than the sum of its proper divisors (1).

75727133 is an equidigital number, since it uses as much as digits as its factorization.

75727133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30870, while the sum is 35.

The square root of 75727133 is about 8702.1338187826. The cubic root of 75727133 is about 423.0748134678.

The spelling of 75727133 in words is "seventy-five million, seven hundred twenty-seven thousand, one hundred thirty-three".