550778000 has 40 divisors (see below), whose sum is σ = 1331786040. Its totient is φ = 220310400.

The previous prime is 550777999. The next prime is 550778057. The reversal of 550778000 is 877055.

It can be written as a sum of positive squares in 4 ways, for example, as 30976 + 550747024 = 176^2 + 23468^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135695 + ... + 139694.

It is an arithmetic number, because the mean of its divisors is an integer number (33294651).

Almost surely, 2^550778000 is an apocalyptic number.

550778000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

550778000 is an abundant number, since it is smaller than the sum of its proper divisors (781008040).

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

550778000 is a wasteful number, since it uses less digits than its factorization.

550778000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275412 (or 275396 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 550778000 is about 23468.6599532227. The cubic root of 550778000 is about 819.7074109798.

The spelling of 550778000 in words is "five hundred fifty million, seven hundred seventy-eight thousand".