255516228 has 96 divisors (see below), whose sum is σ = 742331520. Its totient is φ = 75323520.

The previous prime is 255516227. The next prime is 255516259. The reversal of 255516228 is 822615552.

It is a happy number.

255516228 is a `hidden beast` number, since 25 + 5 + 5 + 1 + 622 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 255516192 and 255516201.

It is not an unprimeable number, because it can be changed into a prime (255516221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41050 + ... + 46862.

It is an arithmetic number, because the mean of its divisors is an integer number (7732620).

Almost surely, 2^255516228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255516228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371165760).

255516228 is an abundant number, since it is smaller than the sum of its proper divisors (486815292).

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

255516228 is a wasteful number, since it uses less digits than its factorization.

255516228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5874 (or 5866 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 255516228 is about 15984.8749760516. The cubic root of 255516228 is about 634.5601997328.

The spelling of 255516228 in words is "two hundred fifty-five million, five hundred sixteen thousand, two hundred twenty-eight".