55055000550 has 192 divisors, whose sum is σ = 152771579136. Its totient is φ = 13005619200.

The previous prime is 55055000527. The next prime is 55055000551. The reversal of 55055000550 is 5500055055.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55055000551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 47748774 + ... + 47749926.

It is an arithmetic number, because the mean of its divisors is an integer number (795685308).

Almost surely, 2^55055000550 is an apocalyptic number.

55055000550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55055000550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76385789568).

55055000550 is an abundant number, since it is smaller than the sum of its proper divisors (97716578586).

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

55055000550 is a wasteful number, since it uses less digits than its factorization.

55055000550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895 (or 1890 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 30.

The spelling of 55055000550 in words is "fifty-five billion, fifty-five million, five hundred fifty", and thus it is an aban number.