550613620 has 24 divisors (see below), whose sum is σ = 1167741288. Its totient is φ = 218064000.

The previous prime is 550613533. The next prime is 550613627. The reversal of 550613620 is 26316055.

It can be written as a sum of positive squares in 4 ways, for example, as 219810276 + 330803344 = 14826^2 + 18188^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550613627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134271 + ... + 138310.

It is an arithmetic number, because the mean of its divisors is an integer number (48655887).

Almost surely, 2^550613620 is an apocalyptic number.

It is an amenable number.

550613620 is an abundant number, since it is smaller than the sum of its proper divisors (617127668).

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

550613620 is a wasteful number, since it uses less digits than its factorization.

550613620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272691 (or 272689 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 550613620 is about 23465.1575745828. The cubic root of 550613620 is about 819.6258554885.

Adding to 550613620 its reverse (26316055), we get a palindrome (576929675).

The spelling of 550613620 in words is "five hundred fifty million, six hundred thirteen thousand, six hundred twenty".