133775500 has 24 divisors (see below), whose sum is σ = 292166784. Its totient is φ = 53510000.

The previous prime is 133775459. The next prime is 133775503. The reversal of 133775500 is 5577331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133775503) 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 7 ways as a sum of consecutive naturals, for example, 133276 + ... + 134275.

It is an arithmetic number, because the mean of its divisors is an integer number (12173616).

Almost surely, 2^133775500 is an apocalyptic number.

133775500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133775500 is an abundant number, since it is smaller than the sum of its proper divisors (158391284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133775500 is a wasteful number, since it uses less digits than its factorization.

133775500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267570 (or 267558 counting only the distinct ones).

The product of its (nonzero) digits is 11025, while the sum is 31.

The square root of 133775500 is about 11566.1359148161. The cubic root of 133775500 is about 511.4370592964.

The spelling of 133775500 in words is "one hundred thirty-three million, seven hundred seventy-five thousand, five hundred".