133805773 has 2 divisors, whose sum is σ = 133805774. Its totient is φ = 133805772.

The previous prime is 133805753. The next prime is 133805779. The reversal of 133805773 is 377508331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108222409 + 25583364 = 10403^2 + 5058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133805773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133805779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66902886 + 66902887.

It is an arithmetic number, because the mean of its divisors is an integer number (66902887).

Almost surely, 2^133805773 is an apocalyptic number.

It is an amenable number.

133805773 is a deficient number, since it is larger than the sum of its proper divisors (1).

133805773 is an equidigital number, since it uses as much as digits as its factorization.

133805773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 133805773 is about 11567.4445319612. Note that the first 3 decimals coincide. The cubic root of 133805773 is about 511.4756352846.

The spelling of 133805773 in words is "one hundred thirty-three million, eight hundred five thousand, seven hundred seventy-three".