549082691 has 4 divisors (see below), whose sum is σ = 577981800. Its totient is φ = 520183584.

The previous prime is 549082687. The next prime is 549082727. The reversal of 549082691 is 196280945.

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

It is a cyclic number.

It is not a de Polignac number, because 549082691 - 2² = 549082687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549082601) 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, 14449526 + ... + 14449563.

It is an arithmetic number, because the mean of its divisors is an integer number (144495450).

Almost surely, 2^549082691 is an apocalyptic number.

549082691 is a deficient number, since it is larger than the sum of its proper divisors (28899109).

549082691 is a wasteful number, since it uses less digits than its factorization.

549082691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28899108.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 549082691 is about 23432.5135442189. The cubic root of 549082691 is about 818.8655196946.

The spelling of 549082691 in words is "five hundred forty-nine million, eighty-two thousand, six hundred ninety-one".