549759420 has 288 divisors, whose sum is σ = 2022451200. Its totient is φ = 123596928.

The previous prime is 549759403. The next prime is 549759421. The reversal of 549759420 is 24957945.

549759420 is a `hidden beast` number, since 54 + 9 + 7 + 594 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549759421) 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 95 ways as a sum of consecutive naturals, for example, 2090209 + ... + 2090471.

It is an arithmetic number, because the mean of its divisors is an integer number (7022400).

Almost surely, 2^549759420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549759420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1011225600).

549759420 is an abundant number, since it is smaller than the sum of its proper divisors (1472691780).

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

549759420 is a wasteful number, since it uses less digits than its factorization.

549759420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 549759420 is about 23446.9490552609. The cubic root of 549759420 is about 819.2017911713.

The spelling of 549759420 in words is "five hundred forty-nine million, seven hundred fifty-nine thousand, four hundred twenty".