133255306 has 8 divisors (see below), whose sum is σ = 200919204. Its totient is φ = 66282240.

The previous prime is 133255301. The next prime is 133255313. The reversal of 133255306 is 603552331.

It can be written as a sum of positive squares in 2 ways, for example, as 124523281 + 8732025 = 11159^2 + 2955^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (133255301) by changing a digit.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172225 + ... + 172996.

Almost surely, 2^133255306 is an apocalyptic number.

133255306 is a deficient number, since it is larger than the sum of its proper divisors (67663898).

133255306 is a wasteful number, since it uses less digits than its factorization.

133255306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345416.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 133255306 is about 11543.6262066995. The cubic root of 133255306 is about 510.7732803473.

The spelling of 133255306 in words is "one hundred thirty-three million, two hundred fifty-five thousand, three hundred six".