255500553 has 24 divisors (see below), whose sum is σ = 432315360. Its totient is φ = 132726720.

The previous prime is 255500549. The next prime is 255500569. The reversal of 255500553 is 355005552.

It is not a de Polignac number, because 255500553 - 2² = 255500549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255500553.

It is not an unprimeable number, because it can be changed into a prime (255500153) 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 23 ways as a sum of consecutive naturals, for example, 77388 + ... + 80621.

It is an arithmetic number, because the mean of its divisors is an integer number (18013140).

Almost surely, 2^255500553 is an apocalyptic number.

It is an amenable number.

255500553 is a deficient number, since it is larger than the sum of its proper divisors (176814807).

255500553 is a wasteful number, since it uses less digits than its factorization.

255500553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158037 (or 158030 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 30.

The square root of 255500553 is about 15984.3846612874. The cubic root of 255500553 is about 634.5472234735.

It can be divided in two parts, 2 and 55500553, that added together give a palindrome (55500555).

The spelling of 255500553 in words is "two hundred fifty-five million, five hundred thousand, five hundred fifty-three".