205088851 has 4 divisors (see below), whose sum is σ = 223733304. Its totient is φ = 186444400.

The previous prime is 205088843. The next prime is 205088857. The reversal of 205088851 is 158880502.

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 205088851 - 2³ = 205088843 is a prime.

It is a super-2 number, since 2×205088851² = 84122873609000402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205088851.

It is not an unprimeable number, because it can be changed into a prime (205088857) 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, 9322210 + ... + 9322231.

It is an arithmetic number, because the mean of its divisors is an integer number (55933326).

Almost surely, 2^205088851 is an apocalyptic number.

205088851 is a deficient number, since it is larger than the sum of its proper divisors (18644453).

205088851 is a wasteful number, since it uses less digits than its factorization.

205088851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18644452.

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 205088851 is about 14320.9235386549. The cubic root of 205088851 is about 589.7220283987.

The spelling of 205088851 in words is "two hundred five million, eighty-eight thousand, eight hundred fifty-one".