550489428 has 18 divisors (see below), whose sum is σ = 1391515034. Its totient is φ = 183496464.

The previous prime is 550489421. The next prime is 550489463. The reversal of 550489428 is 824984055.

550489428 is a `hidden beast` number, since 550 + 4 + 8 + 94 + 2 + 8 = 666.

550489428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 299013264 + 251476164 = 17292^2 + 15858^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×550489428² = 606077220679534368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550489421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7645651 + ... + 7645722.

Almost surely, 2^550489428 is an apocalyptic number.

It is an amenable number.

550489428 is an abundant number, since it is smaller than the sum of its proper divisors (841025606).

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

550489428 is a wasteful number, since it uses less digits than its factorization.

550489428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15291383 (or 15291378 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 550489428 is about 23462.5111188040. The cubic root of 550489428 is about 819.5642281062.

The spelling of 550489428 in words is "five hundred fifty million, four hundred eighty-nine thousand, four hundred twenty-eight".