133205773 has 2 divisors, whose sum is σ = 133205774. Its totient is φ = 133205772.

The previous prime is 133205759. The next prime is 133205797. The reversal of 133205773 is 377502331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127531849 + 5673924 = 11293^2 + 2382^2 .

It is a cyclic number.

It is not a de Polignac number, because 133205773 - 2⁵ = 133205741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133205173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66602886 + 66602887.

It is an arithmetic number, because the mean of its divisors is an integer number (66602887).

Almost surely, 2^133205773 is an apocalyptic number.

It is an amenable number.

133205773 is a deficient number, since it is larger than the sum of its proper divisors (1).

133205773 is an equidigital number, since it uses as much as digits as its factorization.

133205773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 31.

The square root of 133205773 is about 11541.4805376087. The cubic root of 133205773 is about 510.7099851357.

The spelling of 133205773 in words is "one hundred thirty-three million, two hundred five thousand, seven hundred seventy-three".