200416561 has 4 divisors (see below), whose sum is σ = 200445300. Its totient is φ = 200387824.

The previous prime is 200416529. The next prime is 200416591. The reversal of 200416561 is 165614002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 27625536 + 172791025 = 5256^2 + 13145^2 .

It is a cyclic number.

It is not a de Polignac number, because 200416561 - 2⁵ = 200416529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200416501) 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, 3495 + ... + 20323.

It is an arithmetic number, because the mean of its divisors is an integer number (50111325).

Almost surely, 2^200416561 is an apocalyptic number.

It is an amenable number.

200416561 is a deficient number, since it is larger than the sum of its proper divisors (28739).

200416561 is a wasteful number, since it uses less digits than its factorization.

200416561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28738.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 200416561 is about 14156.8556183921. The cubic root of 200416561 is about 585.2092766723.

The spelling of 200416561 in words is "two hundred million, four hundred sixteen thousand, five hundred sixty-one".