551806853 has 8 divisors (see below), whose sum is σ = 600931800. Its totient is φ = 503635968.

The previous prime is 551806847. The next prime is 551806861. The reversal of 551806853 is 358608155.

551806853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 26388769 + 525418084 = 5137^2 + 22922^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 551806853 - 2²⁰ = 550758277 is a prime.

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 551806853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551806253) 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, 237308 + ... + 239621.

It is an arithmetic number, because the mean of its divisors is an integer number (75116475).

Almost surely, 2^551806853 is an apocalyptic number.

It is an amenable number.

551806853 is a deficient number, since it is larger than the sum of its proper divisors (49124947).

551806853 is a wasteful number, since it uses less digits than its factorization.

551806853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477031.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 551806853 is about 23490.5694481849. The cubic root of 551806853 is about 820.2174978280.

The spelling of 551806853 in words is "five hundred fifty-one million, eight hundred six thousand, eight hundred fifty-three".