5555444550 has 48 divisors (see below), whose sum is σ = 14149881552. Its totient is φ = 1441411200.

The previous prime is 5555444443. The next prime is 5555444563. The reversal of 5555444550 is 554445555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 494941 + ... + 506040.

It is an arithmetic number, because the mean of its divisors is an integer number (294789199).

Almost surely, 2^5555444550 is an apocalyptic number.

5555444550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5555444550 is an abundant number, since it is smaller than the sum of its proper divisors (8594437002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5555444550 is a wasteful number, since it uses less digits than its factorization.

5555444550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001033 (or 1001028 counting only the distinct ones).

The product of its (nonzero) digits is 1000000, while the sum is 42.

The square root of 5555444550 is about 74534.8545983689. The cubic root of 5555444550 is about 1771.0858191253.

It can be divided in two parts, 5 and 555444550, that added together give a palindrome (555444555).

The spelling of 5555444550 in words is "five billion, five hundred fifty-five million, four hundred forty-four thousand, five hundred fifty".