551005455500 has 24 divisors (see below), whose sum is σ = 1203395915904. Its totient is φ = 220402182000.

The previous prime is 551005455499. The next prime is 551005455529. The reversal of 551005455500 is 5554500155.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 551004956 + ... + 551005955.

It is an arithmetic number, because the mean of its divisors is an integer number (50141496496).

Almost surely, 2^551005455500 is an apocalyptic number.

551005455500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551005455500 is an abundant number, since it is smaller than the sum of its proper divisors (652390460404).

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

551005455500 is a wasteful number, since it uses less digits than its factorization.

551005455500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102010930 (or 1102010918 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 35.

Adding to 551005455500 its reverse (5554500155), we get a palindrome (556559955655).

The spelling of 551005455500 in words is "five hundred fifty-one billion, five million, four hundred fifty-five thousand, five hundred".