255384787 has 4 divisors (see below), whose sum is σ = 291868336. Its totient is φ = 218901240.

The previous prime is 255384769. The next prime is 255384791. The reversal of 255384787 is 787483552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255384787 - 2¹⁹ = 254860499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255384787.

It is not an unprimeable number, because it can be changed into a prime (255384737) 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 3 ways as a sum of consecutive naturals, for example, 18241764 + ... + 18241777.

It is an arithmetic number, because the mean of its divisors is an integer number (72967084).

Almost surely, 2^255384787 is an apocalyptic number.

255384787 is a deficient number, since it is larger than the sum of its proper divisors (36483549).

255384787 is an equidigital number, since it uses as much as digits as its factorization.

255384787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36483548.

The product of its digits is 1881600, while the sum is 49.

The square root of 255384787 is about 15980.7630293425. The cubic root of 255384787 is about 634.4513722898.

The spelling of 255384787 in words is "two hundred fifty-five million, three hundred eighty-four thousand, seven hundred eighty-seven".