549221806 has 16 divisors (see below), whose sum is σ = 944880480. Its totient is φ = 234541440.

The previous prime is 549221767. The next prime is 549221819. The reversal of 549221806 is 608122945.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65871 + ... + 73738.

It is an arithmetic number, because the mean of its divisors is an integer number (59055030).

Almost surely, 2^549221806 is an apocalyptic number.

549221806 is a deficient number, since it is larger than the sum of its proper divisors (395658674).

549221806 is a wasteful number, since it uses less digits than its factorization.

549221806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139899.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 549221806 is about 23435.4817744377. The cubic root of 549221806 is about 818.9346694842.

The spelling of 549221806 in words is "five hundred forty-nine million, two hundred twenty-one thousand, eight hundred six".