549403264 has 16 divisors (see below), whose sum is σ = 1094514570. Its totient is φ = 274701568.

The previous prime is 549403241. The next prime is 549403313. The reversal of 549403264 is 462304945.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 536385600 + 13017664 = 23160^2 + 3608^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

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 as a sum of consecutive naturals, namely, 2145979 + ... + 2146234.

Almost surely, 2^549403264 is an apocalyptic number.

It is an amenable number.

549403264 is a deficient number, since it is larger than the sum of its proper divisors (545111306).

549403264 is an equidigital number, since it uses as much as digits as its factorization.

549403264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292227 (or 4292215 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 549403264 is about 23439.3528920915. The cubic root of 549403264 is about 819.0248491305.

The spelling of 549403264 in words is "five hundred forty-nine million, four hundred three thousand, two hundred sixty-four".