550784428 has 12 divisors (see below), whose sum is σ = 1020571272. Its totient is φ = 259192640.

The previous prime is 550784413. The next prime is 550784441. The reversal of 550784428 is 824487055.

It is a happy number.

It is a super-2 number, since 2×550784428² = 606726972254574368, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4049818 + ... + 4049953.

It is an arithmetic number, because the mean of its divisors is an integer number (85047606).

Almost surely, 2^550784428 is an apocalyptic number.

It is an amenable number.

550784428 is a deficient number, since it is larger than the sum of its proper divisors (469786844).

550784428 is a wasteful number, since it uses less digits than its factorization.

550784428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8099792 (or 8099790 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 43.

The square root of 550784428 is about 23468.7969014178. The cubic root of 550784428 is about 819.7105998380.

The spelling of 550784428 in words is "five hundred fifty million, seven hundred eighty-four thousand, four hundred twenty-eight".