208056851 has 4 divisors (see below), whose sum is σ = 208088304. Its totient is φ = 208025400.

The previous prime is 208056839. The next prime is 208056857. The reversal of 208056851 is 158650802.

It is a happy number.

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 208056851 - 2¹⁸ = 207794707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208056857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1535 + ... + 20456.

It is an arithmetic number, because the mean of its divisors is an integer number (52022076).

Almost surely, 2^208056851 is an apocalyptic number.

208056851 is a deficient number, since it is larger than the sum of its proper divisors (31453).

208056851 is an equidigital number, since it uses as much as digits as its factorization.

208056851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31452.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 208056851 is about 14424.1759210015. The cubic root of 208056851 is about 592.5531898103.

The spelling of 208056851 in words is "two hundred eight million, fifty-six thousand, eight hundred fifty-one".