550605564 has 72 divisors (see below), whose sum is σ = 1456273728. Its totient is φ = 175226880.

The previous prime is 550605563. The next prime is 550605577. The reversal of 550605564 is 465506055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550605563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65404 + ... + 73340.

It is an arithmetic number, because the mean of its divisors is an integer number (20226024).

Almost surely, 2^550605564 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 550605564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (728136864).

550605564 is an abundant number, since it is smaller than the sum of its proper divisors (905668164).

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

550605564 is a wasteful number, since it uses less digits than its factorization.

550605564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8035 (or 8030 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 550605564 is about 23464.9859151886. The cubic root of 550605564 is about 819.6218581676.

The spelling of 550605564 in words is "five hundred fifty million, six hundred five thousand, five hundred sixty-four".