549491126 has 4 divisors (see below), whose sum is σ = 824236692. Its totient is φ = 274745562.

The previous prime is 549491071. The next prime is 549491149. The reversal of 549491126 is 621194945.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 137372780 + ... + 137372783.

It is an arithmetic number, because the mean of its divisors is an integer number (206059173).

Almost surely, 2^549491126 is an apocalyptic number.

549491126 is a deficient number, since it is larger than the sum of its proper divisors (274745566).

549491126 is a wasteful number, since it uses less digits than its factorization.

549491126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274745565.

The product of its digits is 77760, while the sum is 41.

The square root of 549491126 is about 23441.2270583261. The cubic root of 549491126 is about 819.0685069985.

The spelling of 549491126 in words is "five hundred forty-nine million, four hundred ninety-one thousand, one hundred twenty-six".