550494144 has 280 divisors, whose sum is σ = 1799783040. Its totient is φ = 166281984.

The previous prime is 550494107. The next prime is 550494149. The reversal of 550494144 is 441494055.

550494144 is a `hidden beast` number, since 5 + 504 + 9 + 4 + 144 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 550494099 and 550494108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550494149) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23934517 + ... + 23934539.

Almost surely, 2^550494144 is an apocalyptic number.

550494144 is a gapful number since it is divisible by the number (54) 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 550494144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (899891520).

550494144 is an abundant number, since it is smaller than the sum of its proper divisors (1249288896).

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

550494144 is an frugal number, since it uses more digits than its factorization.

550494144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 550494144 is about 23462.6116193402. The cubic root of 550494144 is about 819.5665684804.

The spelling of 550494144 in words is "five hundred fifty million, four hundred ninety-four thousand, one hundred forty-four".