255031780 has 12 divisors (see below), whose sum is σ = 535566780. Its totient is φ = 102012704.

The previous prime is 255031759. The next prime is 255031801. The reversal of 255031780 is 87130552.

It is an interprime number because it is at equal distance from previous prime (255031759) and next prime (255031801).

It can be written as a sum of positive squares in 2 ways, for example, as 95413824 + 159617956 = 9768^2 + 12634^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6375775 + ... + 6375814.

It is an arithmetic number, because the mean of its divisors is an integer number (44630565).

Almost surely, 2^255031780 is an apocalyptic number.

255031780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255031780 is an abundant number, since it is smaller than the sum of its proper divisors (280535000).

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

255031780 is a wasteful number, since it uses less digits than its factorization.

255031780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12751598 (or 12751596 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 255031780 is about 15969.7144620685. The cubic root of 255031780 is about 634.1589128862.

The spelling of 255031780 in words is "two hundred fifty-five million, thirty-one thousand, seven hundred eighty".