55011105550 has 24 divisors (see below), whose sum is σ = 102335081832. Its totient is φ = 22001340000.

The previous prime is 55011105547. The next prime is 55011105551. The reversal of 55011105550 is 5550111055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55011105551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298720 + ... + 446380.

It is an arithmetic number, because the mean of its divisors is an integer number (4263961743).

Almost surely, 2^55011105550 is an apocalyptic number.

55011105550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55011105550 is a deficient number, since it is larger than the sum of its proper divisors (47323976282).

55011105550 is a wasteful number, since it uses less digits than its factorization.

55011105550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155124 (or 155119 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 28.

The spelling of 55011105550 in words is "fifty-five billion, eleven million, one hundred five thousand, five hundred fifty".