255576778 has 16 divisors (see below), whose sum is σ = 392736960. Its totient is φ = 124671456.

The previous prime is 255576757. The next prime is 255576779. The reversal of 255576778 is 877675552.

It is a happy number.

It is a super-2 number, since 2×255576778² = 130638978905722568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255576779) 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, 137451 + ... + 139297.

It is an arithmetic number, because the mean of its divisors is an integer number (24546060).

Almost surely, 2^255576778 is an apocalyptic number.

255576778 is a deficient number, since it is larger than the sum of its proper divisors (137160182).

255576778 is a wasteful number, since it uses less digits than its factorization.

255576778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501.

The product of its digits is 4116000, while the sum is 52.

The square root of 255576778 is about 15986.7688417641. The cubic root of 255576778 is about 634.6103199487.

The spelling of 255576778 in words is "two hundred fifty-five million, five hundred seventy-six thousand, seven hundred seventy-eight".