55205025550 has 12 divisors (see below), whose sum is σ = 102681347616. Its totient is φ = 22082010200.

The previous prime is 55205025493. The next prime is 55205025563. The reversal of 55205025550 is 5552050255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 552050206 + ... + 552050305.

It is an arithmetic number, because the mean of its divisors is an integer number (8556778968).

Almost surely, 2^55205025550 is an apocalyptic number.

55205025550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55205025550 is a deficient number, since it is larger than the sum of its proper divisors (47476322066).

55205025550 is a wasteful number, since it uses less digits than its factorization.

55205025550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104100523 (or 1104100518 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 34.

It can be divided in two parts, 552050 and 25550, that added together give a square (577600 = 760²).

The spelling of 55205025550 in words is "fifty-five billion, two hundred five million, twenty-five thousand, five hundred fifty".