550009955 has 16 divisors (see below), whose sum is σ = 720811008. Its totient is φ = 399564000.

The previous prime is 550009951. The next prime is 550009963. The reversal of 550009955 is 559900055.

It is a happy number.

It is not a de Polignac number, because 550009955 - 2² = 550009951 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (550009951) 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 in 15 ways as a sum of consecutive naturals, for example, 49460 + ... + 59550.

It is an arithmetic number, because the mean of its divisors is an integer number (45050688).

Almost surely, 2^550009955 is an apocalyptic number.

550009955 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

550009955 is a deficient number, since it is larger than the sum of its proper divisors (170801053).

550009955 is a wasteful number, since it uses less digits than its factorization.

550009955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11098.

The product of its (nonzero) digits is 50625, while the sum is 38.

The square root of 550009955 is about 23452.2910394699. The cubic root of 550009955 is about 819.3262138092.

The spelling of 550009955 in words is "five hundred fifty million, nine thousand, nine hundred fifty-five".