549780000 has 720 divisors, whose sum is σ = 2423149344. Its totient is φ = 107520000.

The previous prime is 549779959. The next prime is 549780001. The reversal of 549780000 is 87945.

549780000 = 360² + 361² + ... + 1192².

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549780001) by changing a digit.

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 119 ways as a sum of consecutive naturals, for example, 32339992 + ... + 32340008.

Almost surely, 2^549780000 is an apocalyptic number.

549780000 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 549780000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1211574672).

549780000 is an abundant number, since it is smaller than the sum of its proper divisors (1873369344).

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

549780000 is a wasteful number, since it uses less digits than its factorization.

549780000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 549780000 is about 23447.3879142219. The cubic root of 549780000 is about 819.2120131956.

The spelling of 549780000 in words is "five hundred forty-nine million, seven hundred eighty thousand".