551488435550 has 48 divisors (see below), whose sum is σ = 1104818505840. Its totient is φ = 203599818240.

The previous prime is 551488435517. The next prime is 551488435559. The reversal of 551488435550 is 55534884155.

It is a junction number, because it is equal to n+sod(n) for n = 551488435492 and 551488435501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551488435559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5306486 + ... + 5409414.

It is an arithmetic number, because the mean of its divisors is an integer number (23017052205).

Almost surely, 2^551488435550 is an apocalyptic number.

551488435550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551488435550 is an abundant number, since it is smaller than the sum of its proper divisors (553330070290).

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

551488435550 is a wasteful number, since it uses less digits than its factorization.

551488435550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111197 (or 111192 counting only the distinct ones).

The product of its (nonzero) digits is 9600000, while the sum is 53.

The spelling of 551488435550 in words is "five hundred fifty-one billion, four hundred eighty-eight million, four hundred thirty-five thousand, five hundred fifty".