133475090 has 32 divisors (see below), whose sum is σ = 281280384. Its totient is φ = 44645760.

The previous prime is 133475077. The next prime is 133475093. The reversal of 133475090 is 90574331.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133475093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20384 + ... + 26123.

It is an arithmetic number, because the mean of its divisors is an integer number (8790012).

Almost surely, 2^133475090 is an apocalyptic number.

133475090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133475090 is an abundant number, since it is smaller than the sum of its proper divisors (147805294).

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

133475090 is a wasteful number, since it uses less digits than its factorization.

133475090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46562.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 133475090 is about 11553.1419968769. The cubic root of 133475090 is about 511.0539399226.

The spelling of 133475090 in words is "one hundred thirty-three million, four hundred seventy-five thousand, ninety".