133333777 has 2 divisors, whose sum is σ = 133333778. Its totient is φ = 133333776.

The previous prime is 133333727. The next prime is 133333787. The reversal of 133333777 is 777333331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132687361 + 646416 = 11519^2 + 804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133333777 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (133333727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66666888 + 66666889.

It is an arithmetic number, because the mean of its divisors is an integer number (66666889).

Almost surely, 2^133333777 is an apocalyptic number.

It is an amenable number.

133333777 is a deficient number, since it is larger than the sum of its proper divisors (1).

133333777 is an equidigital number, since it uses as much as digits as its factorization.

133333777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83349, while the sum is 37.

The square root of 133333777 is about 11547.0245951067. The cubic root of 133333777 is about 510.8735215717.

The spelling of 133333777 in words is "one hundred thirty-three million, three hundred thirty-three thousand, seven hundred seventy-seven".