255242444 has 24 divisors (see below), whose sum is σ = 453944736. Its totient is φ = 125552000.

The previous prime is 255242417. The next prime is 255242461. The reversal of 255242444 is 444242552.

It is a self number, because there is not a number n which added to its sum of digits gives 255242444.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215534 + ... + 216714.

It is an arithmetic number, because the mean of its divisors is an integer number (18914364).

Almost surely, 2^255242444 is an apocalyptic number.

It is an amenable number.

255242444 is a deficient number, since it is larger than the sum of its proper divisors (198702292).

255242444 is a wasteful number, since it uses less digits than its factorization.

255242444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017 (or 2015 counting only the distinct ones).

The product of its digits is 51200, while the sum is 32.

The square root of 255242444 is about 15976.3088352723. The cubic root of 255242444 is about 634.3334763409. Note that the first 3 decimals are identical.

Adding to 255242444 its reverse (444242552), we get a palindrome (699484996).

The spelling of 255242444 in words is "two hundred fifty-five million, two hundred forty-two thousand, four hundred forty-four".