200445561 has 12 divisors (see below), whose sum is σ = 292239792. Its totient is φ = 132380856.

The previous prime is 200445547. The next prime is 200445563. The reversal of 200445561 is 165544002.

200445561 is a `hidden beast` number, since 200 + 4 + 455 + 6 + 1 = 666.

It is not a de Polignac number, because 200445561 - 2²² = 196251257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200445563) 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 11 ways as a sum of consecutive naturals, for example, 103111 + ... + 105036.

It is an arithmetic number, because the mean of its divisors is an integer number (24353316).

Almost surely, 2^200445561 is an apocalyptic number.

It is an amenable number.

200445561 is a deficient number, since it is larger than the sum of its proper divisors (91794231).

200445561 is a wasteful number, since it uses less digits than its factorization.

200445561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208260 (or 208257 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 200445561 is about 14157.8798200861. The cubic root of 200445561 is about 585.2375016361.

Adding to 200445561 its reverse (165544002), we get a palindrome (365989563).

The spelling of 200445561 in words is "two hundred million, four hundred forty-five thousand, five hundred sixty-one".