255887787 has 8 divisors (see below), whose sum is σ = 348443136. Its totient is φ = 166962152.

The previous prime is 255887783. The next prime is 255887803. The reversal of 255887787 is 787788552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255887787 - 2² = 255887783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255887783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907263 + ... + 907544.

It is an arithmetic number, because the mean of its divisors is an integer number (43555392).

Almost surely, 2^255887787 is an apocalyptic number.

255887787 is a deficient number, since it is larger than the sum of its proper divisors (92555349).

255887787 is a wasteful number, since it uses less digits than its factorization.

255887787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814857.

The product of its digits is 8780800, while the sum is 57.

The square root of 255887787 is about 15996.4929593958. The cubic root of 255887787 is about 634.8676327316.

The spelling of 255887787 in words is "two hundred fifty-five million, eight hundred eighty-seven thousand, seven hundred eighty-seven".