255255540 has 24 divisors (see below), whose sum is σ = 714715680. Its totient is φ = 68068128.

The previous prime is 255255521. The next prime is 255255577. The reversal of 255255540 is 45552552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2127070 + ... + 2127189.

It is an arithmetic number, because the mean of its divisors is an integer number (29779820).

Almost surely, 2^255255540 is an apocalyptic number.

255255540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255255540 is an abundant number, since it is smaller than the sum of its proper divisors (459460140).

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

255255540 is a wasteful number, since it uses less digits than its factorization.

255255540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4254271 (or 4254269 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 33.

The square root of 255255540 is about 15976.7186868894. The cubic root of 255255540 is about 634.3443249665.

The spelling of 255255540 in words is "two hundred fifty-five million, two hundred fifty-five thousand, five hundred forty".