550343638 has 16 divisors (see below), whose sum is σ = 889819056. Its totient is φ = 253775520.

The previous prime is 550343617. The next prime is 550343671. The reversal of 550343638 is 836343055.

It is a happy number.

550343638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 550343597 and 550343606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21745 + ... + 39667.

It is an arithmetic number, because the mean of its divisors is an integer number (55613691).

Almost surely, 2^550343638 is an apocalyptic number.

550343638 is a deficient number, since it is larger than the sum of its proper divisors (339475418).

550343638 is a wasteful number, since it uses less digits than its factorization.

550343638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19119.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 550343638 is about 23459.4040418763. The cubic root of 550343638 is about 819.4918713922.

It can be divided in two parts, 5503 and 43638, that added together give a triangular number (49141 = T₃₁₃).

The spelling of 550343638 in words is "five hundred fifty million, three hundred forty-three thousand, six hundred thirty-eight".