255311340 has 48 divisors (see below), whose sum is σ = 715723008. Its totient is φ = 68001984.

The previous prime is 255311327. The next prime is 255311347. The reversal of 255311340 is 43113552.

It is a self number, because there is not a number n which added to its sum of digits gives 255311340.

It is not an unprimeable number, because it can be changed into a prime (255311347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61779 + ... + 65781.

It is an arithmetic number, because the mean of its divisors is an integer number (14910896).

Almost surely, 2^255311340 is an apocalyptic number.

255311340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255311340 is an abundant number, since it is smaller than the sum of its proper divisors (460411668).

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

255311340 is a wasteful number, since it uses less digits than its factorization.

255311340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5078 (or 5076 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 255311340 is about 15978.4648824598. The cubic root of 255311340 is about 634.3905450986.

Adding to 255311340 its reverse (43113552), we get a palindrome (298424892).

The spelling of 255311340 in words is "two hundred fifty-five million, three hundred eleven thousand, three hundred forty".