255555500 has 24 divisors (see below), whose sum is σ = 558134304. Its totient is φ = 102222000.

The previous prime is 255555473. The next prime is 255555533. The reversal of 255555500 is 5555552.

It is a super-2 number, since 2×255555500² = 130617227160500000, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 255056 + ... + 256055.

It is an arithmetic number, because the mean of its divisors is an integer number (23255596).

Almost surely, 2^255555500 is an apocalyptic number.

255555500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255555500 is an abundant number, since it is smaller than the sum of its proper divisors (302578804).

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

255555500 is a wasteful number, since it uses less digits than its factorization.

255555500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511130 (or 511118 counting only the distinct ones).

The product of its (nonzero) digits is 31250, while the sum is 32.

The square root of 255555500 is about 15986.1033400889. The cubic root of 255555500 is about 634.5927080028.

The spelling of 255555500 in words is "two hundred fifty-five million, five hundred fifty-five thousand, five hundred".