133577383 has 4 divisors (see below), whose sum is σ = 134131888. Its totient is φ = 133022880.

The previous prime is 133577351. The next prime is 133577407. The reversal of 133577383 is 383775331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383775331 = 127 ⋅3021853.

It is a cyclic number.

It is not a de Polignac number, because 133577383 - 2⁵ = 133577351 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 (133577083) 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, 276891 + ... + 277372.

It is an arithmetic number, because the mean of its divisors is an integer number (33532972).

Almost surely, 2^133577383 is an apocalyptic number.

133577383 is a deficient number, since it is larger than the sum of its proper divisors (554505).

133577383 is an equidigital number, since it uses as much as digits as its factorization.

133577383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554504.

The product of its digits is 158760, while the sum is 40.

The square root of 133577383 is about 11557.5682130801. The cubic root of 133577383 is about 511.1844608849.

The spelling of 133577383 in words is "one hundred thirty-three million, five hundred seventy-seven thousand, three hundred eighty-three".