200678551 has 4 divisors (see below), whose sum is σ = 211240600. Its totient is φ = 190116504.

The previous prime is 200678509. The next prime is 200678561. The reversal of 200678551 is 155876002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200678551 - 2⁹ = 200678039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200678561) 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, 5280996 + ... + 5281033.

It is an arithmetic number, because the mean of its divisors is an integer number (52810150).

Almost surely, 2^200678551 is an apocalyptic number.

200678551 is a deficient number, since it is larger than the sum of its proper divisors (10562049).

200678551 is a wasteful number, since it uses less digits than its factorization.

200678551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10562048.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 200678551 is about 14166.1057104626. The cubic root of 200678551 is about 585.4641661527.

The spelling of 200678551 in words is "two hundred million, six hundred seventy-eight thousand, five hundred fifty-one".