255558408 has 64 divisors (see below), whose sum is σ = 749919360. Its totient is φ = 71041536.

The previous prime is 255558403. The next prime is 255558437. The reversal of 255558408 is 804855552.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 255558408.

It is not an unprimeable number, because it can be changed into a prime (255558403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14341 + ... + 26772.

It is an arithmetic number, because the mean of its divisors is an integer number (11717490).

Almost surely, 2^255558408 is an apocalyptic number.

255558408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

255558408 is an abundant number, since it is smaller than the sum of its proper divisors (494360952).

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

255558408 is a wasteful number, since it uses less digits than its factorization.

255558408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41166 (or 41162 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 42.

The square root of 255558408 is about 15986.1942938274. The cubic root of 255558408 is about 634.5951150319.

The spelling of 255558408 in words is "two hundred fifty-five million, five hundred fifty-eight thousand, four hundred eight".