255576780 has 72 divisors (see below), whose sum is σ = 794181024. Its totient is φ = 66489600.

The previous prime is 255576779. The next prime is 255576781. The reversal of 255576780 is 87675552.

255576780 is a `hidden beast` number, since 2 + 5 + 5 + 576 + 78 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (255576779) and next prime (255576781).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (255576781) 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 23 ways as a sum of consecutive naturals, for example, 9936 + ... + 24695.

It is an arithmetic number, because the mean of its divisors is an integer number (11030292).

Almost surely, 2^255576780 is an apocalyptic number.

255576780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255576780 is an abundant number, since it is smaller than the sum of its proper divisors (538604244).

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

255576780 is a wasteful number, since it uses less digits than its factorization.

255576780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34687 (or 34682 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 45.

The square root of 255576780 is about 15986.7689043158. The cubic root of 255576780 is about 634.6103216040.

The spelling of 255576780 in words is "two hundred fifty-five million, five hundred seventy-six thousand, seven hundred eighty".