549423631 has 6 divisors (see below), whose sum is σ = 557276096. Its totient is φ = 541680300.

The previous prime is 549423601. The next prime is 549423649. The reversal of 549423631 is 136324945.

549423631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 549423631 - 2¹¹ = 549421583 is a prime.

It is a super-2 number, since 2×549423631² = 603732652602448322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549423601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49455 + ... + 59536.

Almost surely, 2^549423631 is an apocalyptic number.

549423631 is a deficient number, since it is larger than the sum of its proper divisors (7852465).

549423631 is an equidigital number, since it uses as much as digits as its factorization.

549423631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109133 (or 109062 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 549423631 is about 23439.7873497180. The cubic root of 549423631 is about 819.0349697311.

The spelling of 549423631 in words is "five hundred forty-nine million, four hundred twenty-three thousand, six hundred thirty-one".