55203505055772 has 12 divisors (see below), whose sum is σ = 128808178463496. Its totient is φ = 18401168351920.

The previous prime is 55203505055759. The next prime is 55203505055779. The reversal of 55203505055772 is 27755050530255.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55203505055779) 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 3 ways as a sum of consecutive naturals, for example, 2300146043979 + ... + 2300146044002.

It is an arithmetic number, because the mean of its divisors is an integer number (10734014871958).

Almost surely, 2^{55203505055772} is an apocalyptic number.

It is an amenable number.

55203505055772 is an abundant number, since it is smaller than the sum of its proper divisors (73604673407724).

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

55203505055772 is a wasteful number, since it uses less digits than its factorization.

55203505055772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600292087988 (or 4600292087986 counting only the distinct ones).

The product of its (nonzero) digits is 9187500, while the sum is 51.

The spelling of 55203505055772 in words is "fifty-five trillion, two hundred three billion, five hundred five million, fifty-five thousand, seven hundred seventy-two".