550987018 has 4 divisors (see below), whose sum is σ = 826480530. Its totient is φ = 275493508.

The previous prime is 550987013. The next prime is 550987027. The reversal of 550987018 is 810789055.

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., 548636929 + 2350089 = 23423^2 + 1533^2 .

It is not an unprimeable number, because it can be changed into a prime (550987013) 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, 137746753 + ... + 137746756.

Almost surely, 2^550987018 is an apocalyptic number.

550987018 is a deficient number, since it is larger than the sum of its proper divisors (275493512).

550987018 is a wasteful number, since it uses less digits than its factorization.

550987018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275493511.

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 550987018 is about 23473.1126610852. The cubic root of 550987018 is about 819.8110897365.

The spelling of 550987018 in words is "five hundred fifty million, nine hundred eighty-seven thousand, eighteen".