133533845 has 8 divisors (see below), whose sum is σ = 160306776. Its totient is φ = 106782976.

The previous prime is 133533839. The next prime is 133533847. The reversal of 133533845 is 548335331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 223729 + 133310116 = 473^2 + 11546^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133533845 - 2⁶ = 133533781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133533847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14249 + ... + 21681.

It is an arithmetic number, because the mean of its divisors is an integer number (20038347).

Almost surely, 2^133533845 is an apocalyptic number.

It is an amenable number.

133533845 is a deficient number, since it is larger than the sum of its proper divisors (26772931).

133533845 is an equidigital number, since it uses as much as digits as its factorization.

133533845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11031.

The product of its digits is 64800, while the sum is 35.

The square root of 133533845 is about 11555.6845318657. The cubic root of 133533845 is about 511.1289166327.

The spelling of 133533845 in words is "one hundred thirty-three million, five hundred thirty-three thousand, eight hundred forty-five".