549130811 has 4 divisors (see below), whose sum is σ = 549348624. Its totient is φ = 548913000.

The previous prime is 549130793. The next prime is 549130831. The reversal of 549130811 is 118031945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118031945 = 5 ⋅23606389.

It is a cyclic number.

It is not a de Polignac number, because 549130811 - 2¹⁴ = 549114427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549130831) 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, 105080 + ... + 110181.

It is an arithmetic number, because the mean of its divisors is an integer number (137337156).

Almost surely, 2^549130811 is an apocalyptic number.

549130811 is a deficient number, since it is larger than the sum of its proper divisors (217813).

549130811 is a wasteful number, since it uses less digits than its factorization.

549130811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217812.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 549130811 is about 23433.5403001766. The cubic root of 549130811 is about 818.8894399884.

The spelling of 549130811 in words is "five hundred forty-nine million, one hundred thirty thousand, eight hundred eleven".