255567789 has 12 divisors (see below), whose sum is σ = 385203936. Its totient is φ = 162970632.

The previous prime is 255567779. The next prime is 255567833. The reversal of 255567789 is 987765552.

255567789 is a `hidden beast` number, since 2 + 5 + 5 + 567 + 78 + 9 = 666.

It is not a de Polignac number, because 255567789 - 2⁴ = 255567773 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255567709) 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 11 ways as a sum of consecutive naturals, for example, 617107 + ... + 617520.

It is an arithmetic number, because the mean of its divisors is an integer number (32100328).

Almost surely, 2^255567789 is an apocalyptic number.

It is an amenable number.

255567789 is a deficient number, since it is larger than the sum of its proper divisors (129636147).

255567789 is a wasteful number, since it uses less digits than its factorization.

255567789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234656 (or 1234653 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 54.

The square root of 255567789 is about 15986.4877005551. The cubic root of 255567789 is about 634.6028798112.

The spelling of 255567789 in words is "two hundred fifty-five million, five hundred sixty-seven thousand, seven hundred eighty-nine".