133244001 has 16 divisors (see below), whose sum is σ = 215344320. Its totient is φ = 80753760.

The previous prime is 133243949. The next prime is 133244003. The reversal of 133244001 is 100442331.

It is not a de Polignac number, because 133244001 - 2¹⁵ = 133211233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133244003) 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 15 ways as a sum of consecutive naturals, for example, 224020 + ... + 224613.

It is an arithmetic number, because the mean of its divisors is an integer number (13459020).

Almost surely, 2^133244001 is an apocalyptic number.

133244001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133244001 is a deficient number, since it is larger than the sum of its proper divisors (82100319).

133244001 is a wasteful number, since it uses less digits than its factorization.

133244001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448653 (or 448647 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 133244001 is about 11543.1365321562. The cubic root of 133244001 is about 510.7588357562.

Adding to 133244001 its reverse (100442331), we get a palindrome (233686332).

The spelling of 133244001 in words is "one hundred thirty-three million, two hundred forty-four thousand, one".