255503420055 has 24 divisors (see below), whose sum is σ = 476939718528. Its totient is φ = 125786298816.

The previous prime is 255503420041. The next prime is 255503420059. The reversal of 255503420055 is 550024305552.

255503420055 is a `hidden beast` number, since 2 + 5 + 550 + 34 + 20 + 0 + 55 = 666.

It is not a de Polignac number, because 255503420055 - 2⁸ = 255503419799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255503420059) 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, 218378407 + ... + 218379576.

It is an arithmetic number, because the mean of its divisors is an integer number (19872488272).

Almost surely, 2^255503420055 is an apocalyptic number.

255503420055 is a deficient number, since it is larger than the sum of its proper divisors (221436298473).

255503420055 is a wasteful number, since it uses less digits than its factorization.

255503420055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436758007 (or 436758004 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 36.

The spelling of 255503420055 in words is "two hundred fifty-five billion, five hundred three million, four hundred twenty thousand, fifty-five".