549856805 has 8 divisors (see below), whose sum is σ = 668867352. Its totient is φ = 433859328.

The previous prime is 549856793. The next prime is 549856859. The reversal of 549856805 is 508658945.

It can be written as a sum of positive squares in 4 ways, for example, as 214271044 + 335585761 = 14638^2 + 18319^2 .

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 549856805 - 2¹⁰ = 549855781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752864 + ... + 753593.

It is an arithmetic number, because the mean of its divisors is an integer number (83608419).

Almost surely, 2^549856805 is an apocalyptic number.

It is an amenable number.

549856805 is a deficient number, since it is larger than the sum of its proper divisors (119010547).

549856805 is a wasteful number, since it uses less digits than its factorization.

549856805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506535.

The product of its (nonzero) digits is 1728000, while the sum is 50.

The square root of 549856805 is about 23449.0256727225. The cubic root of 549856805 is about 819.2501597566.

The spelling of 549856805 in words is "five hundred forty-nine million, eight hundred fifty-six thousand, eight hundred five".