550561660 has 48 divisors (see below), whose sum is σ = 1335489120. Its totient is φ = 188426240.

The previous prime is 550561657. The next prime is 550561717. The reversal of 550561660 is 66165055.

550561660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69865 + ... + 77344.

It is an arithmetic number, because the mean of its divisors is an integer number (27822690).

Almost surely, 2^550561660 is an apocalyptic number.

It is an amenable number.

550561660 is an abundant number, since it is smaller than the sum of its proper divisors (784927460).

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

550561660 is a wasteful number, since it uses less digits than its factorization.

550561660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147246 (or 147244 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 550561660 is about 23464.0503749885. The cubic root of 550561660 is about 819.6000726785.

The spelling of 550561660 in words is "five hundred fifty million, five hundred sixty-one thousand, six hundred sixty".