255651860 has 48 divisors (see below), whose sum is σ = 549246096. Its totient is φ = 99919872.

The previous prime is 255651817. The next prime is 255651881. The reversal of 255651860 is 68156552.

255651860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 42667024 + 212984836 = 6532^2 + 14594^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458702 + ... + 459258.

It is an arithmetic number, because the mean of its divisors is an integer number (11442627).

Almost surely, 2^255651860 is an apocalyptic number.

255651860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255651860 is an abundant number, since it is smaller than the sum of its proper divisors (293594236).

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

255651860 is a wasteful number, since it uses less digits than its factorization.

255651860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 255651860 is about 15989.1169237078. The cubic root of 255651860 is about 634.6724580235.

The spelling of 255651860 in words is "two hundred fifty-five million, six hundred fifty-one thousand, eight hundred sixty".