133838575 has 48 divisors (see below), whose sum is σ = 187064416. Its totient is φ = 94348800.

The previous prime is 133838557. The next prime is 133838581. The reversal of 133838575 is 575838331.

It is not a de Polignac number, because 133838575 - 2¹⁵ = 133805807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 852397 + ... + 852553.

Almost surely, 2^133838575 is an apocalyptic number.

133838575 is a deficient number, since it is larger than the sum of its proper divisors (53225841).

133838575 is a wasteful number, since it uses less digits than its factorization.

133838575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 279 counting only the distinct ones).

The product of its digits is 302400, while the sum is 43.

The square root of 133838575 is about 11568.8623036148. The cubic root of 133838575 is about 511.5174273354.

The spelling of 133838575 in words is "one hundred thirty-three million, eight hundred thirty-eight thousand, five hundred seventy-five".