133535973 has 8 divisors (see below), whose sum is σ = 178162048. Its totient is φ = 88966944.

The previous prime is 133535959. The next prime is 133535993. The reversal of 133535973 is 379535331.

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

It is not a de Polignac number, because 133535973 - 2¹³ = 133527781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133535903) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8461 + ... + 18402.

It is an arithmetic number, because the mean of its divisors is an integer number (22270256).

Almost surely, 2^133535973 is an apocalyptic number.

It is an amenable number.

133535973 is a deficient number, since it is larger than the sum of its proper divisors (44626075).

133535973 is a wasteful number, since it uses less digits than its factorization.

133535973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28523.

The product of its digits is 127575, while the sum is 39.

The square root of 133535973 is about 11555.7766073942. The cubic root of 133535973 is about 511.1316317410.

The spelling of 133535973 in words is "one hundred thirty-three million, five hundred thirty-five thousand, nine hundred seventy-three".