133333055 has 4 divisors (see below), whose sum is σ = 159999672. Its totient is φ = 106666440.

The previous prime is 133333037. The next prime is 133333063. The reversal of 133333055 is 550333331.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-133333055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13333301 + ... + 13333310.

It is an arithmetic number, because the mean of its divisors is an integer number (39999918).

Almost surely, 2^133333055 is an apocalyptic number.

133333055 is a deficient number, since it is larger than the sum of its proper divisors (26666617).

133333055 is an equidigital number, since it uses as much as digits as its factorization.

133333055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26666616.

The product of its (nonzero) digits is 6075, while the sum is 26.

The square root of 133333055 is about 11546.9933315994. The cubic root of 133333055 is about 510.8725994464.

Adding to 133333055 its reverse (550333331), we get a palindrome (683666386).

The spelling of 133333055 in words is "one hundred thirty-three million, three hundred thirty-three thousand, fifty-five".