550381776 has 80 divisors (see below), whose sum is σ = 1647894528. Its totient is φ = 155030400.

The previous prime is 550381757. The next prime is 550381787. The reversal of 550381776 is 677183055.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 12321 + ... + 35391.

Almost surely, 2^550381776 is an apocalyptic number.

550381776 is a gapful number since it is divisible by the number (56) 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 550381776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (823947264).

550381776 is an abundant number, since it is smaller than the sum of its proper divisors (1097512752).

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

550381776 is a wasteful number, since it uses less digits than its factorization.

550381776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23160 (or 23154 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 42.

The square root of 550381776 is about 23460.2168787929. The cubic root of 550381776 is about 819.5108008131.

The spelling of 550381776 in words is "five hundred fifty million, three hundred eighty-one thousand, seven hundred seventy-six".