255638241 has 8 divisors (see below), whose sum is σ = 378723360. Its totient is φ = 170425476.

The previous prime is 255638203. The next prime is 255638249. The reversal of 255638241 is 142836552.

It is not a de Polignac number, because 255638241 - 2⁶ = 255638177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255638196 and 255638205.

It is not an unprimeable number, because it can be changed into a prime (255638249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4734015 + ... + 4734068.

It is an arithmetic number, because the mean of its divisors is an integer number (47340420).

Almost surely, 2^255638241 is an apocalyptic number.

It is an amenable number.

255638241 is a deficient number, since it is larger than the sum of its proper divisors (123085119).

255638241 is an equidigital number, since it uses as much as digits as its factorization.

255638241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468092 (or 9468086 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 255638241 is about 15988.6910346032. The cubic root of 255638241 is about 634.6611878041.

The spelling of 255638241 in words is "two hundred fifty-five million, six hundred thirty-eight thousand, two hundred forty-one".