549584881 has 2 divisors, whose sum is σ = 549584882. Its totient is φ = 549584880.

The previous prime is 549584863. The next prime is 549584911. The reversal of 549584881 is 188485945.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459030625 + 90554256 = 21425^2 + 9516^2 .

It is a cyclic number.

It is not a de Polignac number, because 549584881 - 2¹¹ = 549582833 is a prime.

It is a super-2 number, since 2×549584881² = 604087082847568322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (549584851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274792440 + 274792441.

It is an arithmetic number, because the mean of its divisors is an integer number (274792441).

Almost surely, 2^549584881 is an apocalyptic number.

It is an amenable number.

549584881 is a deficient number, since it is larger than the sum of its proper divisors (1).

549584881 is an equidigital number, since it uses as much as digits as its factorization.

549584881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1843200, while the sum is 52.

The square root of 549584881 is about 23443.2267616896. The cubic root of 549584881 is about 819.1150879150.

The spelling of 549584881 in words is "five hundred forty-nine million, five hundred eighty-four thousand, eight hundred eighty-one".