133481475 has 18 divisors (see below), whose sum is σ = 239080556. Its totient is φ = 71190000.

The previous prime is 133481473. The next prime is 133481483. The reversal of 133481475 is 574184331.

It is a happy number.

133481475 is a `hidden beast` number, since 133 + 481 + 47 + 5 = 666.

It is not a de Polignac number, because 133481475 - 2¹ = 133481473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133481473) 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 17 ways as a sum of consecutive naturals, for example, 296401 + ... + 296850.

Almost surely, 2^133481475 is an apocalyptic number.

133481475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133481475 is a deficient number, since it is larger than the sum of its proper divisors (105599081).

133481475 is a wasteful number, since it uses less digits than its factorization.

133481475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593267 (or 593259 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 133481475 is about 11553.4183253269. The cubic root of 133481475 is about 511.0620888273.

It can be divided in two parts, 133481 and 475, that added together give a square (133956 = 366²).

The spelling of 133481475 in words is "one hundred thirty-three million, four hundred eighty-one thousand, four hundred seventy-five".