550000442 has 4 divisors (see below), whose sum is σ = 825000666. Its totient is φ = 275000220.

The previous prime is 550000441. The next prime is 550000447. The reversal of 550000442 is 244000055.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 357928561 + 192071881 = 18919^2 + 13859^2 .

It is not an unprimeable number, because it can be changed into a prime (550000441) 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 as a sum of consecutive naturals, namely, 137500109 + ... + 137500112.

Almost surely, 2^550000442 is an apocalyptic number.

550000442 is a deficient number, since it is larger than the sum of its proper divisors (275000224).

550000442 is a wasteful number, since it uses less digits than its factorization.

550000442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275000223.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 550000442 is about 23452.0882225869. The cubic root of 550000442 is about 819.3214900794.

Adding to 550000442 its reverse (244000055), we get a palindrome (794000497).

The spelling of 550000442 in words is "five hundred fifty million, four hundred forty-two", and thus it is an aban number.