133787273 has 2 divisors, whose sum is σ = 133787274. Its totient is φ = 133787272.

The previous prime is 133787257. The next prime is 133787299. The reversal of 133787273 is 372787331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132526144 + 1261129 = 11512^2 + 1123^2 .

It is a cyclic number.

It is not a de Polignac number, because 133787273 - 2⁴ = 133787257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133787273.

It is not a weakly prime, because it can be changed into another prime (133787243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66893636 + 66893637.

It is an arithmetic number, because the mean of its divisors is an integer number (66893637).

Almost surely, 2^133787273 is an apocalyptic number.

It is an amenable number.

133787273 is a deficient number, since it is larger than the sum of its proper divisors (1).

133787273 is an equidigital number, since it uses as much as digits as its factorization.

133787273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 41.

The square root of 133787273 is about 11566.6448462811. The cubic root of 133787273 is about 511.4520619734.

The spelling of 133787273 in words is "one hundred thirty-three million, seven hundred eighty-seven thousand, two hundred seventy-three".