255311620 has 12 divisors (see below), whose sum is σ = 536154444. Its totient is φ = 102124640.

The previous prime is 255311611. The next prime is 255311659. The reversal of 255311620 is 26113552.

It can be written as a sum of positive squares in 2 ways, for example, as 56670784 + 198640836 = 7528^2 + 14094^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6382771 + ... + 6382810.

It is an arithmetic number, because the mean of its divisors is an integer number (44679537).

Almost surely, 2^255311620 is an apocalyptic number.

255311620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255311620 is an abundant number, since it is smaller than the sum of its proper divisors (280842824).

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

255311620 is a wasteful number, since it uses less digits than its factorization.

255311620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12765590 (or 12765588 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 255311620 is about 15978.4736442503. The cubic root of 255311620 is about 634.3907770106.

The spelling of 255311620 in words is "two hundred fifty-five million, three hundred eleven thousand, six hundred twenty".