549800775 has 72 divisors (see below), whose sum is σ = 1020028464. Its totient is φ = 282892800.

The previous prime is 549800767. The next prime is 549800789. The reversal of 549800775 is 577008945.

It is not a de Polignac number, because 549800775 - 2³ = 549800767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 549800775.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 986797 + ... + 987353.

It is an arithmetic number, because the mean of its divisors is an integer number (14167062).

Almost surely, 2^549800775 is an apocalyptic number.

549800775 is a deficient number, since it is larger than the sum of its proper divisors (470227689).

549800775 is a wasteful number, since it uses less digits than its factorization.

549800775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The square root of 549800775 is about 23447.8309231366. The cubic root of 549800775 is about 819.2223318171. Note that the first 3 decimals are identical.

The spelling of 549800775 in words is "five hundred forty-nine million, eight hundred thousand, seven hundred seventy-five".