133326445 has 16 divisors (see below), whose sum is σ = 187102080. Its totient is φ = 89296704.

The previous prime is 133326433. The next prime is 133326463. The reversal of 133326445 is 544623331.

It is not a de Polignac number, because 133326445 - 2⁷ = 133326317 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 42790 + ... + 45799.

It is an arithmetic number, because the mean of its divisors is an integer number (11693880).

Almost surely, 2^133326445 is an apocalyptic number.

It is an amenable number.

133326445 is a deficient number, since it is larger than the sum of its proper divisors (53775635).

133326445 is an equidigital number, since it uses as much as digits as its factorization.

133326445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88644.

The product of its digits is 25920, while the sum is 31.

The square root of 133326445 is about 11546.7071063572. The cubic root of 133326445 is about 510.8641571195.

Adding to 133326445 its reverse (544623331), we get a palindrome (677949776).

The spelling of 133326445 in words is "one hundred thirty-three million, three hundred twenty-six thousand, four hundred forty-five".