200851 has 6 divisors (see below), whose sum is σ = 233700. Its totient is φ = 172116.

The previous prime is 200843. The next prime is 200861. The reversal of 200851 is 158002.

It is a happy number.

It is not a de Polignac number, because 200851 - 2³ = 200843 is a prime.

It is a super-2 number, since 2×200851² = 80682248402, which contains 22 as substring.

It is a Duffinian number.

200851 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (200861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2001 + ... + 2098.

It is an arithmetic number, because the mean of its divisors is an integer number (38950).

2²⁰⁰⁸⁵¹ is an apocalyptic number.

200851 is a deficient number, since it is larger than the sum of its proper divisors (32849).

200851 is an equidigital number, since it uses as much as digits as its factorization.

200851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113 (or 4106 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 200851 is about 448.1640324703. The cubic root of 200851 is about 58.5631820349.

Adding to 200851 its reverse (158002), we get a palindrome (358853).

Subtracting from 200851 its reverse (158002), we obtain a square (42849 = 207²).

The spelling of 200851 in words is "two hundred thousand, eight hundred fifty-one".