255641724 has 96 divisors (see below), whose sum is σ = 731330880. Its totient is φ = 76723200.

The previous prime is 255641723. The next prime is 255641741. The reversal of 255641724 is 427146552.

It is a happy number.

255641724 is a `hidden beast` number, since 2 + 5 + 5 + 641 + 7 + 2 + 4 = 666.

255641724 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255641723) 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, 55344 + ... + 59784.

It is an arithmetic number, because the mean of its divisors is an integer number (7618030).

Almost surely, 2^255641724 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 255641724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365665440).

255641724 is an abundant number, since it is smaller than the sum of its proper divisors (475689156).

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

255641724 is a wasteful number, since it uses less digits than its factorization.

255641724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508 (or 4500 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 255641724 is about 15988.7999549685. The cubic root of 255641724 is about 634.6640701518.

The spelling of 255641724 in words is "two hundred fifty-five million, six hundred forty-one thousand, seven hundred twenty-four".