550605520 has 80 divisors (see below), whose sum is σ = 1377889488. Its totient is φ = 203857920.

The previous prime is 550605479. The next prime is 550605521. The reversal of 550605520 is 25506055.

550605520 is a nontrivial binomial coefficient, being equal to C(33185, 2).

It can be written as a sum of positive squares in 8 ways, for example, as 153958464 + 396647056 = 12408^2 + 19916^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550605521) 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 15 ways as a sum of consecutive naturals, for example, 79642 + ... + 86278.

Almost surely, 2^550605520 is an apocalyptic number.

550605520 is the 33184-th triangular number.

550605520 is the 11062-nd centered nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550605520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688944744).

550605520 is an abundant number, since it is smaller than the sum of its proper divisors (827283968).

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

550605520 is a wasteful number, since it uses less digits than its factorization.

550605520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6728 (or 6722 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 550605520 is about 23464.9849776214. The cubic root of 550605520 is about 819.6218363350.

The spelling of 550605520 in words is "five hundred fifty million, six hundred five thousand, five hundred twenty".