255523320 has 192 divisors, whose sum is σ = 908107200. Its totient is φ = 61931520.

The previous prime is 255523313. The next prime is 255523393. The reversal of 255523320 is 23325552.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 331896 + ... + 332664.

It is an arithmetic number, because the mean of its divisors is an integer number (4729725).

Almost surely, 2^255523320 is an apocalyptic number.

255523320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255523320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454053600).

255523320 is an abundant number, since it is smaller than the sum of its proper divisors (652583880).

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

255523320 is a wasteful number, since it uses less digits than its factorization.

255523320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 255523320 is about 15985.0968092158. The cubic root of 255523320 is about 634.5660705397.

Adding to 255523320 its reverse (23325552), we get a palindrome (278848872).

The spelling of 255523320 in words is "two hundred fifty-five million, five hundred twenty-three thousand, three hundred twenty".