550504989 has 12 divisors (see below), whose sum is σ = 795381600. Its totient is φ = 366907464.

The previous prime is 550504939. The next prime is 550505017. The reversal of 550504989 is 989405055.

550504989 is a `hidden beast` number, since 5 + 50 + 504 + 98 + 9 = 666.

It is not a de Polignac number, because 550504989 - 2⁷ = 550504861 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550504919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52422 + ... + 62040.

It is an arithmetic number, because the mean of its divisors is an integer number (66281800).

Almost surely, 2^550504989 is an apocalyptic number.

It is an amenable number.

550504989 is a deficient number, since it is larger than the sum of its proper divisors (244876611).

550504989 is a wasteful number, since it uses less digits than its factorization.

550504989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15984 (or 15981 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 550504989 is about 23462.8427305815. The cubic root of 550504989 is about 819.5719503972.

The spelling of 550504989 in words is "five hundred fifty million, five hundred four thousand, nine hundred eighty-nine".