55555050505554 has 48 divisors (see below), whose sum is σ = 123008577194880. Its totient is φ = 18112805465760.

The previous prime is 55555050505553. The next prime is 55555050505637. The reversal of 55555050505554 is 45550505055555.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55555050505554.

It is not an unprimeable number, because it can be changed into a prime (55555050505553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19570969 + ... + 22229100.

It is an arithmetic number, because the mean of its divisors is an integer number (2562678691560).

Almost surely, 2^{55555050505554} is an apocalyptic number.

55555050505554 is an abundant number, since it is smaller than the sum of its proper divisors (67453526689326).

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

55555050505554 is a wasteful number, since it uses less digits than its factorization.

55555050505554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41801695 (or 41801692 counting only the distinct ones).

The product of its (nonzero) digits is 39062500, while the sum is 54.

The spelling of 55555050505554 in words is "fifty-five trillion, five hundred fifty-five billion, fifty million, five hundred five thousand, five hundred fifty-four".