133235251 has 8 divisors (see below), whose sum is σ = 143822880. Its totient is φ = 123047232.

The previous prime is 133235243. The next prime is 133235257. The reversal of 133235251 is 152532331.

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

It is not a de Polignac number, because 133235251 - 2³ = 133235243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133235257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99210 + ... + 100543.

It is an arithmetic number, because the mean of its divisors is an integer number (17977860).

Almost surely, 2^133235251 is an apocalyptic number.

133235251 is a deficient number, since it is larger than the sum of its proper divisors (10587629).

133235251 is a wasteful number, since it uses less digits than its factorization.

133235251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199805.

The product of its digits is 2700, while the sum is 25.

The square root of 133235251 is about 11542.7575128303. The cubic root of 133235251 is about 510.7476551711.

Adding to 133235251 its reverse (152532331), we get a palindrome (285767582).

The spelling of 133235251 in words is "one hundred thirty-three million, two hundred thirty-five thousand, two hundred fifty-one".