133575307 has 4 divisors (see below), whose sum is σ = 141432696. Its totient is φ = 125717920.

The previous prime is 133575289. The next prime is 133575319. The reversal of 133575307 is 703575331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 703575331 = 43 ⋅16362217.

It is a cyclic number.

It is not a de Polignac number, because 133575307 - 2¹⁹ = 133051019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133575347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3928669 + ... + 3928702.

It is an arithmetic number, because the mean of its divisors is an integer number (35358174).

Almost surely, 2^133575307 is an apocalyptic number.

133575307 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

133575307 is a deficient number, since it is larger than the sum of its proper divisors (7857389).

133575307 is an equidigital number, since it uses as much as digits as its factorization.

133575307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857388.

The product of its (nonzero) digits is 33075, while the sum is 34.

The square root of 133575307 is about 11557.4784014507. The cubic root of 133575307 is about 511.1818126710.

The spelling of 133575307 in words is "one hundred thirty-three million, five hundred seventy-five thousand, three hundred seven".