133545375 has 32 divisors (see below), whose sum is σ = 246916800. Its totient is φ = 71222400.

The previous prime is 133545367. The next prime is 133545389. The reversal of 133545375 is 573545331.

133545375 is a `hidden beast` number, since 133 + 5 + 453 + 75 = 666.

It is not a de Polignac number, because 133545375 - 2³ = 133545367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16410 + ... + 23159.

It is an arithmetic number, because the mean of its divisors is an integer number (7716150).

Almost surely, 2^133545375 is an apocalyptic number.

133545375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133545375 is a deficient number, since it is larger than the sum of its proper divisors (113371425).

133545375 is an equidigital number, since it uses as much as digits as its factorization.

133545375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39593 (or 39577 counting only the distinct ones).

The product of its digits is 94500, while the sum is 36.

The square root of 133545375 is about 11556.1834097595. The cubic root of 133545375 is about 511.1436273772.

The spelling of 133545375 in words is "one hundred thirty-three million, five hundred forty-five thousand, three hundred seventy-five".