549002000 has 80 divisors (see below), whose sum is σ = 1333246512. Its totient is φ = 218649600.

The previous prime is 549001949. The next prime is 549002023. The reversal of 549002000 is 200945.

It can be written as a sum of positive squares in 8 ways, for example, as 265820416 + 283181584 = 16304^2 + 16828^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625562 + ... + 626438.

Almost surely, 2^549002000 is an apocalyptic number.

549002000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (666623256).

549002000 is an abundant number, since it is smaller than the sum of its proper divisors (784244512).

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

549002000 is a wasteful number, since it uses less digits than its factorization.

549002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 549002000 is about 23430.7917066411. The cubic root of 549002000 is about 818.8254053271.

Adding to 549002000 its reverse (200945), we get a palindrome (549202945).

The spelling of 549002000 in words is "five hundred forty-nine million, two thousand".