549087321 has 8 divisors (see below), whose sum is σ = 733002880. Its totient is φ = 365614992.

The previous prime is 549087317. The next prime is 549087337. The reversal of 549087321 is 123780945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 549087321 - 2² = 549087317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 549087321.

It is not an unprimeable number, because it can be changed into a prime (549047321) 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 7 ways as a sum of consecutive naturals, for example, 107905 + ... + 112878.

It is an arithmetic number, because the mean of its divisors is an integer number (91625360).

Almost surely, 2^549087321 is an apocalyptic number.

It is an amenable number.

549087321 is a deficient number, since it is larger than the sum of its proper divisors (183915559).

549087321 is a wasteful number, since it uses less digits than its factorization.

549087321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221615.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 549087321 is about 23432.6123383630. The cubic root of 549087321 is about 818.8678213132.

The spelling of 549087321 in words is "five hundred forty-nine million, eighty-seven thousand, three hundred twenty-one".