133333901 has 2 divisors, whose sum is σ = 133333902. Its totient is φ = 133333900.

The previous prime is 133333859. The next prime is 133333919. The reversal of 133333901 is 109333331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132273001 + 1060900 = 11501^2 + 1030^2 .

It is an emirp because it is prime and its reverse (109333331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133333901 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (133333801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66666950 + 66666951.

It is an arithmetic number, because the mean of its divisors is an integer number (66666951).

Almost surely, 2^133333901 is an apocalyptic number.

It is an amenable number.

133333901 is a deficient number, since it is larger than the sum of its proper divisors (1).

133333901 is an equidigital number, since it uses as much as digits as its factorization.

133333901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2187, while the sum is 26.

The square root of 133333901 is about 11547.0299644541. The cubic root of 133333901 is about 510.8736799419.

The spelling of 133333901 in words is "one hundred thirty-three million, three hundred thirty-three thousand, nine hundred one".