133545885 has 32 divisors (see below), whose sum is σ = 235059840. Its totient is φ = 64739840.

The previous prime is 133545883. The next prime is 133545943. The reversal of 133545885 is 588545331.

It is not a de Polignac number, because 133545885 - 2¹ = 133545883 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133545883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16621 + ... + 23309.

It is an arithmetic number, because the mean of its divisors is an integer number (7345620).

Almost surely, 2^133545885 is an apocalyptic number.

133545885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133545885 is a deficient number, since it is larger than the sum of its proper divisors (101513955).

133545885 is an equidigital number, since it uses as much as digits as its factorization.

133545885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6730 (or 6708 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The square root of 133545885 is about 11556.2054758472. The cubic root of 133545885 is about 511.1442780497.

The spelling of 133545885 in words is "one hundred thirty-three million, five hundred forty-five thousand, eight hundred eighty-five".