549724033 has 4 divisors (see below), whose sum is σ = 549778180. Its totient is φ = 549669888.

The previous prime is 549724031. The next prime is 549724051. The reversal of 549724033 is 330427945.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 361266049 + 188457984 = 19007^2 + 13728^2 .

It is a 3-Lehmer number, since φ(549724033) divides (549724033-1)³.

It is a cyclic number.

It is not a de Polignac number, because 549724033 - 2¹ = 549724031 is a prime.

It is a deceptive number, since it divides R_549724032.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 549723983 and 549724001.

It is not an unprimeable number, because it can be changed into a prime (549724031) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6768 + ... + 33841.

It is an arithmetic number, because the mean of its divisors is an integer number (137444545).

Almost surely, 2^549724033 is an apocalyptic number.

549724033 is the 13537-th octagonal number.

It is an amenable number.

549724033 is a deficient number, since it is larger than the sum of its proper divisors (54147).

549724033 is a wasteful number, since it uses less digits than its factorization.

549724033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54146.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 549724033 is about 23446.1944246822. The cubic root of 549724033 is about 819.1842139580.

The spelling of 549724033 in words is "five hundred forty-nine million, seven hundred twenty-four thousand, thirty-three".