549243450 has 432 divisors, whose sum is σ = 1938893760. Its totient is φ = 113762880.

The previous prime is 549243439. The next prime is 549243467. The reversal of 549243450 is 54342945.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 23880139 + ... + 23880161.

It is an arithmetic number, because the mean of its divisors is an integer number (4488180).

Almost surely, 2^549243450 is an apocalyptic number.

549243450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 549243450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (969446880).

549243450 is an abundant number, since it is smaller than the sum of its proper divisors (1389650310).

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

549243450 is a wasteful number, since it uses less digits than its factorization.

549243450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 549243450 is about 23435.9435483191. The cubic root of 549243450 is about 818.9454270014.

The spelling of 549243450 in words is "five hundred forty-nine million, two hundred forty-three thousand, four hundred fifty".