255211224 has 64 divisors (see below), whose sum is σ = 656208000. Its totient is φ = 82663680.

The previous prime is 255211217. The next prime is 255211277. The reversal of 255211224 is 422112552.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 255211194 and 255211203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411987 + ... + 412605.

It is an arithmetic number, because the mean of its divisors is an integer number (10253250).

Almost surely, 2^255211224 is an apocalyptic number.

255211224 is a gapful number since it is divisible by the number (24) 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 255211224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328104000).

255211224 is an abundant number, since it is smaller than the sum of its proper divisors (400996776).

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

255211224 is a wasteful number, since it uses less digits than its factorization.

255211224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1084 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 255211224 is about 15975.3317336448. The cubic root of 255211224 is about 634.3076124363.

Adding to 255211224 its reverse (422112552), we get a palindrome (677323776).

The spelling of 255211224 in words is "two hundred fifty-five million, two hundred eleven thousand, two hundred twenty-four".