200020445 has 4 divisors (see below), whose sum is σ = 240024540. Its totient is φ = 160016352.

The previous prime is 200020441. The next prime is 200020451. The reversal of 200020445 is 544020002.

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 33016516 + 167003929 = 5746^2 + 12923^2 .

It is a cyclic number.

It is not a de Polignac number, because 200020445 - 2² = 200020441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200020441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20002040 + ... + 20002049.

It is an arithmetic number, because the mean of its divisors is an integer number (60006135).

Almost surely, 2^200020445 is an apocalyptic number.

It is an amenable number.

200020445 is a deficient number, since it is larger than the sum of its proper divisors (40004095).

200020445 is an equidigital number, since it uses as much as digits as its factorization.

200020445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40004094.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 200020445 is about 14142.8584451659. The cubic root of 200020445 is about 584.8234741445.

Adding to 200020445 its reverse (544020002), we get a palindrome (744040447).

The spelling of 200020445 in words is "two hundred million, twenty thousand, four hundred forty-five".