549045043 has 4 divisors (see below), whose sum is σ = 549092520. Its totient is φ = 548997568.

The previous prime is 549045037. The next prime is 549045047. The reversal of 549045043 is 340540945.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 340540945 = 5 ⋅68108189.

It is a cyclic number.

It is not a de Polignac number, because 549045043 - 2⁵ = 549045011 is a prime.

It is a super-3 number, since 3×549045043³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549045047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6168 + ... + 33706.

It is an arithmetic number, because the mean of its divisors is an integer number (137273130).

Almost surely, 2^549045043 is an apocalyptic number.

549045043 is a deficient number, since it is larger than the sum of its proper divisors (47477).

549045043 is a wasteful number, since it uses less digits than its factorization.

549045043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47476.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 549045043 is about 23431.7102022025. The cubic root of 549045043 is about 818.8468040232.

Adding to 549045043 its reverse (340540945), we get a palindrome (889585988).

The spelling of 549045043 in words is "five hundred forty-nine million, forty-five thousand, forty-three".