255779556 has 24 divisors (see below), whose sum is σ = 599028864. Its totient is φ = 84944160.

The previous prime is 255779551. The next prime is 255779561. The reversal of 255779556 is 655977552.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (255779551) and next prime (255779561).

It is a junction number, because it is equal to n+sod(n) for n = 255779499 and 255779508.

It is not an unprimeable number, because it can be changed into a prime (255779551) 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, 36075 + ... + 42578.

It is an arithmetic number, because the mean of its divisors is an integer number (24959536).

Almost surely, 2^255779556 is an apocalyptic number.

It is an amenable number.

255779556 is an abundant number, since it is smaller than the sum of its proper divisors (343249308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255779556 is a wasteful number, since it uses less digits than its factorization.

255779556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78931 (or 78929 counting only the distinct ones).

The product of its digits is 3307500, while the sum is 51.

The square root of 255779556 is about 15993.1096413424. The cubic root of 255779556 is about 634.7781116575.

The spelling of 255779556 in words is "two hundred fifty-five million, seven hundred seventy-nine thousand, five hundred fifty-six".