133481445 has 32 divisors (see below), whose sum is σ = 220631040. Its totient is φ = 68866560.

The previous prime is 133481419. The next prime is 133481473. The reversal of 133481445 is 544184331.

It is not a de Polignac number, because 133481445 - 2⁷ = 133481317 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 31 ways as a sum of consecutive naturals, for example, 77251 + ... + 78959.

It is an arithmetic number, because the mean of its divisors is an integer number (6894720).

Almost surely, 2^133481445 is an apocalyptic number.

133481445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133481445 is a deficient number, since it is larger than the sum of its proper divisors (87149595).

133481445 is a wasteful number, since it uses less digits than its factorization.

133481445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885.

The product of its digits is 23040, while the sum is 33.

The square root of 133481445 is about 11553.4170270098. The cubic root of 133481445 is about 511.0620505402.

The spelling of 133481445 in words is "one hundred thirty-three million, four hundred eighty-one thousand, four hundred forty-five".