549859122 has 18 divisors (see below), whose sum is σ = 1191577023. Its totient is φ = 183253212.

The previous prime is 549859117. The next prime is 549859129. The reversal of 549859122 is 221958945.

It is a happy number.

549859122 is a `hidden beast` number, since 54 + 9 + 8 + 591 + 2 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 274929561 + 274929561 = 16581^2 + 16581^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=16581.

It is a super-2 number, since 2×549859122² = 604690108093221768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (549859129) 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 8 ways as a sum of consecutive naturals, for example, 96723 + ... + 102249.

Almost surely, 2^549859122 is an apocalyptic number.

549859122 is an abundant number, since it is smaller than the sum of its proper divisors (641717901).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549859122 is an frugal number, since it uses more digits than its factorization.

549859122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11062 (or 5532 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 549859122 is about 23449.0750777083. The cubic root of 549859122 is about 819.2513104804.

Multiplying 549859122 by its product of digits (259200), we get a square (142523484422400 = 11938320²).

It can be divided in two parts, 5498 and 59122, that added together give a triangular number (64620 = T₃₅₉).

The spelling of 549859122 in words is "five hundred forty-nine million, eight hundred fifty-nine thousand, one hundred twenty-two".