200055561 has 8 divisors (see below), whose sum is σ = 269330880. Its totient is φ = 132075312.

The previous prime is 200055517. The next prime is 200055577. The reversal of 200055561 is 165550002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 200055561 - 2⁶ = 200055497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200050561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323406 + ... + 324023.

It is an arithmetic number, because the mean of its divisors is an integer number (33666360).

Almost surely, 2^200055561 is an apocalyptic number.

It is an amenable number.

200055561 is a deficient number, since it is larger than the sum of its proper divisors (69275319).

200055561 is a wasteful number, since it uses less digits than its factorization.

200055561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647535.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 200055561 is about 14144.0998653149. The cubic root of 200055561 is about 584.8576964118.

The spelling of 200055561 in words is "two hundred million, fifty-five thousand, five hundred sixty-one".