255840741 has 16 divisors (see below), whose sum is σ = 408179520. Its totient is φ = 157440240.

The previous prime is 255840727. The next prime is 255840743. The reversal of 255840741 is 147048552.

255840741 is a `hidden beast` number, since 2 + 5 + 584 + 0 + 74 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-255840741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255840696 and 255840705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255840743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364095 + ... + 364796.

It is an arithmetic number, because the mean of its divisors is an integer number (25511220).

Almost surely, 2^255840741 is an apocalyptic number.

It is an amenable number.

255840741 is a deficient number, since it is larger than the sum of its proper divisors (152338779).

255840741 is a wasteful number, since it uses less digits than its factorization.

255840741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728913 (or 728907 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 255840741 is about 15995.0223819787. The cubic root of 255840741 is about 634.8287226901.

The spelling of 255840741 in words is "two hundred fifty-five million, eight hundred forty thousand, seven hundred forty-one".