255240520 has 32 divisors (see below), whose sum is σ = 582868800. Its totient is φ = 100571328.

The previous prime is 255240511. The next prime is 255240553. The reversal of 255240520 is 25042552.

It is a happy number.

255240520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 44940 + ... + 50299.

It is an arithmetic number, because the mean of its divisors is an integer number (18214650).

Almost surely, 2^255240520 is an apocalyptic number.

255240520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255240520 is an abundant number, since it is smaller than the sum of its proper divisors (327628280).

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

255240520 is a wasteful number, since it uses less digits than its factorization.

255240520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95317 (or 95313 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 255240520 is about 15976.2486209999. The cubic root of 255240520 is about 634.3318824828.

The spelling of 255240520 in words is "two hundred fifty-five million, two hundred forty thousand, five hundred twenty".