133224401 has 4 divisors (see below), whose sum is σ = 134403492. Its totient is φ = 132045312.

The previous prime is 133224361. The next prime is 133224433. The reversal of 133224401 is 104422331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15523600 + 117700801 = 3940^2 + 10849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133224401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133224451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589376 + ... + 589601.

It is an arithmetic number, because the mean of its divisors is an integer number (33600873).

Almost surely, 2^133224401 is an apocalyptic number.

It is an amenable number.

133224401 is a deficient number, since it is larger than the sum of its proper divisors (1179091).

133224401 is a wasteful number, since it uses less digits than its factorization.

133224401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179090.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 133224401 is about 11542.2875115811. The cubic root of 133224401 is about 510.7337905659.

Adding to 133224401 its reverse (104422331), we get a palindrome (237646732).

The spelling of 133224401 in words is "one hundred thirty-three million, two hundred twenty-four thousand, four hundred one".