133255389 has 8 divisors (see below), whose sum is σ = 182476000. Its totient is φ = 86435856.

The previous prime is 133255327. The next prime is 133255403. The reversal of 133255389 is 983552331.

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

It is not a de Polignac number, because 133255389 - 2²⁰ = 132206813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133255789) 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, 600139 + ... + 600360.

It is an arithmetic number, because the mean of its divisors is an integer number (22809500).

Almost surely, 2^133255389 is an apocalyptic number.

It is an amenable number.

133255389 is a deficient number, since it is larger than the sum of its proper divisors (49220611).

133255389 is a wasteful number, since it uses less digits than its factorization.

133255389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200539.

The product of its digits is 97200, while the sum is 39.

The square root of 133255389 is about 11543.6298017565. The cubic root of 133255389 is about 510.7733863948.

The spelling of 133255389 in words is "one hundred thirty-three million, two hundred fifty-five thousand, three hundred eighty-nine".