549000061 has 6 divisors (see below), whose sum is σ = 558151386. Its totient is φ = 539996400.

The previous prime is 549000047. The next prime is 549000083. The reversal of 549000061 is 160000945.

549000061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 132595225 + 416404836 = 11515^2 + 20406^2 .

It is not a de Polignac number, because 549000061 - 2⁵ = 549000029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549000031) 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, 70050 + ... + 77491.

It is an arithmetic number, because the mean of its divisors is an integer number (93025231).

Almost surely, 2^549000061 is an apocalyptic number.

It is an amenable number.

549000061 is a deficient number, since it is larger than the sum of its proper divisors (9151325).

549000061 is an equidigital number, since it uses as much as digits as its factorization.

549000061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147663 (or 147602 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 549000061 is about 23430.7503294282. The cubic root of 549000061 is about 818.8244413329.

It can be divided in two parts, 5490000 and 61, that multiplied together give a square (334890000 = 18300²).

The spelling of 549000061 in words is "five hundred forty-nine million, sixty-one", and thus it is an aban number.