549745573 has 4 divisors (see below), whose sum is σ = 592033708. Its totient is φ = 507457440.

The previous prime is 549745571. The next prime is 549745597. The reversal of 549745573 is 375547945.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29084449 + 520661124 = 5393^2 + 22818^2 .

It is a cyclic number.

It is not a de Polignac number, because 549745573 - 2¹ = 549745571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549745571) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21144048 + ... + 21144073.

It is an arithmetic number, because the mean of its divisors is an integer number (148008427).

Almost surely, 2^549745573 is an apocalyptic number.

It is an amenable number.

549745573 is a deficient number, since it is larger than the sum of its proper divisors (42288135).

549745573 is a wasteful number, since it uses less digits than its factorization.

549745573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42288134.

The product of its digits is 2646000, while the sum is 49.

The square root of 549745573 is about 23446.6537697813. The cubic root of 549745573 is about 819.1949132643.

The spelling of 549745573 in words is "five hundred forty-nine million, seven hundred forty-five thousand, five hundred seventy-three".