255122340 has 48 divisors (see below), whose sum is σ = 779284800. Its totient is φ = 61847680.

The previous prime is 255122333. The next prime is 255122341. The reversal of 255122340 is 43221552.

It is a self number, because there is not a number n which added to its sum of digits gives 255122340.

It is not an unprimeable number, because it can be changed into a prime (255122341) 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, 192615 + ... + 193934.

It is an arithmetic number, because the mean of its divisors is an integer number (16235100).

Almost surely, 2^255122340 is an apocalyptic number.

255122340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255122340 is an abundant number, since it is smaller than the sum of its proper divisors (524162460).

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

255122340 is a wasteful number, since it uses less digits than its factorization.

255122340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386572 (or 386570 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 255122340 is about 15972.5495773217. The cubic root of 255122340 is about 634.2339658003.

Adding to 255122340 its reverse (43221552), we get a palindrome (298343892).

The spelling of 255122340 in words is "two hundred fifty-five million, one hundred twenty-two thousand, three hundred forty".