255523800 has 192 divisors, whose sum is σ = 917441280. Its totient is φ = 57623040.

The previous prime is 255523783. The next prime is 255523897. The reversal of 255523800 is 8325552.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 348234 + ... + 348966.

It is an arithmetic number, because the mean of its divisors is an integer number (4778340).

Almost surely, 2^255523800 is an apocalyptic number.

255523800 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 255523800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458720640).

255523800 is an abundant number, since it is smaller than the sum of its proper divisors (661917480).

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

255523800 is a wasteful number, since it uses less digits than its factorization.

255523800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 255523800 is about 15985.1118231935. Note that the first 3 decimals coincide. The cubic root of 255523800 is about 634.5664678831.

The spelling of 255523800 in words is "two hundred fifty-five million, five hundred twenty-three thousand, eight hundred".