550111380 has 192 divisors, whose sum is σ = 1932553728. Its totient is φ = 113817600.

The previous prime is 550111379. The next prime is 550111439. The reversal of 550111380 is 83111055.

It is a self number, because there is not a number n which added to its sum of digits gives 550111380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 288430 + ... + 290330.

It is an arithmetic number, because the mean of its divisors is an integer number (10065384).

Almost surely, 2^550111380 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 550111380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (966276864).

550111380 is an abundant number, since it is smaller than the sum of its proper divisors (1382442348).

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

550111380 is a wasteful number, since it uses less digits than its factorization.

550111380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986 (or 1984 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 550111380 is about 23454.4533084871. The cubic root of 550111380 is about 819.3765735363.

The spelling of 550111380 in words is "five hundred fifty million, one hundred eleven thousand, three hundred eighty".