975691133 has 2 divisors, whose sum is σ = 975691134. Its totient is φ = 975691132.

The previous prime is 975691103. The next prime is 975691139. The reversal of 975691133 is 331196579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 955242649 + 20448484 = 30907^2 + 4522^2 .

It is a cyclic number.

It is not a de Polignac number, because 975691133 - 2¹⁸ = 975428989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (975691139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487845566 + 487845567.

It is an arithmetic number, because the mean of its divisors is an integer number (487845567).

Almost surely, 2^975691133 is an apocalyptic number.

It is an amenable number.

975691133 is a deficient number, since it is larger than the sum of its proper divisors (1).

975691133 is an equidigital number, since it uses as much as digits as its factorization.

975691133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 153090, while the sum is 44.

The square root of 975691133 is about 31236.0550165990. The cubic root of 975691133 is about 991.8304851069.

The spelling of 975691133 in words is "nine hundred seventy-five million, six hundred ninety-one thousand, one hundred thirty-three".