255539040 has 48 divisors (see below), whose sum is σ = 804949488. Its totient is φ = 68143616.

The previous prime is 255539033. The next prime is 255539069. The reversal of 255539040 is 40935552.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 255538992 and 255539010.

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, 265707 + ... + 266666.

It is an arithmetic number, because the mean of its divisors is an integer number (16769781).

Almost surely, 2^255539040 is an apocalyptic number.

255539040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255539040 is an abundant number, since it is smaller than the sum of its proper divisors (549410448).

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

255539040 is a wasteful number, since it uses less digits than its factorization.

255539040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532391 (or 532383 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 255539040 is about 15985.5885096546. The cubic root of 255539040 is about 634.5790832778.

The spelling of 255539040 in words is "two hundred fifty-five million, five hundred thirty-nine thousand, forty".