133003445 has 8 divisors (see below), whose sum is σ = 161790936. Its totient is φ = 104944896.

The previous prime is 133003421. The next prime is 133003463. The reversal of 133003445 is 544300331.

It can be written as a sum of positive squares in 4 ways, for example, as 55457809 + 77545636 = 7447^2 + 8806^2 .

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 133003445 - 2¹⁰ = 133002421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133003445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181832 + ... + 182561.

It is an arithmetic number, because the mean of its divisors is an integer number (20223867).

Almost surely, 2^133003445 is an apocalyptic number.

It is an amenable number.

133003445 is a deficient number, since it is larger than the sum of its proper divisors (28787491).

133003445 is an equidigital number, since it uses as much as digits as its factorization.

133003445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364471.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 133003445 is about 11532.7119533959. The cubic root of 133003445 is about 510.4512794039.

Adding to 133003445 its reverse (544300331), we get a palindrome (677303776).

The spelling of 133003445 in words is "one hundred thirty-three million, three thousand, four hundred forty-five".