550651780 has 24 divisors (see below), whose sum is σ = 1321564608. Its totient is φ = 188794848.

The previous prime is 550651769. The next prime is 550651781. The reversal of 550651780 is 87156055.

It is not an unprimeable number, because it can be changed into a prime (550651781) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1966474 + ... + 1966753.

It is an arithmetic number, because the mean of its divisors is an integer number (55065192).

Almost surely, 2^550651780 is an apocalyptic number.

It is an amenable number.

550651780 is an abundant number, since it is smaller than the sum of its proper divisors (770912828).

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

550651780 is a wasteful number, since it uses less digits than its factorization.

550651780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933243 (or 3933241 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 550651780 is about 23465.9706809669. The cubic root of 550651780 is about 819.6447896370.

The spelling of 550651780 in words is "five hundred fifty million, six hundred fifty-one thousand, seven hundred eighty".