133233145 has 8 divisors (see below), whose sum is σ = 160392456. Its totient is φ = 106244736.

The previous prime is 133233119. The next prime is 133233161. The reversal of 133233145 is 541332331.

It can be written as a sum of positive squares in 4 ways, for example, as 6985449 + 126247696 = 2643^2 + 11236^2 .

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 133233145 - 2⁷ = 133233017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41002 + ... + 44131.

It is an arithmetic number, because the mean of its divisors is an integer number (20049057).

Almost surely, 2^133233145 is an apocalyptic number.

It is an amenable number.

133233145 is a deficient number, since it is larger than the sum of its proper divisors (27159311).

133233145 is an equidigital number, since it uses as much as digits as its factorization.

133233145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85451.

The product of its digits is 3240, while the sum is 25.

The square root of 133233145 is about 11542.6662864349. Note that the first 3 decimals coincide. The cubic root of 133233145 is about 510.7449640910.

Adding to 133233145 its reverse (541332331), we get a palindrome (674565476).

The spelling of 133233145 in words is "one hundred thirty-three million, two hundred thirty-three thousand, one hundred forty-five".