201003445 has 4 divisors (see below), whose sum is σ = 241204140. Its totient is φ = 160802752.

The previous prime is 201003431. The next prime is 201003449. The reversal of 201003445 is 544300102.

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 47416996 + 153586449 = 6886^2 + 12393^2 .

It is a cyclic number.

It is not a de Polignac number, because 201003445 - 2⁷ = 201003317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201003449) 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, 20100340 + ... + 20100349.

It is an arithmetic number, because the mean of its divisors is an integer number (60301035).

Almost surely, 2^201003445 is an apocalyptic number.

It is an amenable number.

201003445 is a deficient number, since it is larger than the sum of its proper divisors (40200695).

201003445 is an equidigital number, since it uses as much as digits as its factorization.

201003445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40200694.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 201003445 is about 14177.5683740196. The cubic root of 201003445 is about 585.7799468469.

Adding to 201003445 its reverse (544300102), we get a palindrome (745303547).

The spelling of 201003445 in words is "two hundred one million, three thousand, four hundred forty-five".