255644356 has 48 divisors (see below), whose sum is σ = 512830080. Its totient is φ = 110373120.

The previous prime is 255644341. The next prime is 255644357. The reversal of 255644356 is 653446552.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (255644357) 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, 158080 + ... + 159688.

It is an arithmetic number, because the mean of its divisors is an integer number (10683960).

Almost surely, 2^255644356 is an apocalyptic number.

It is an amenable number.

255644356 is an abundant number, since it is smaller than the sum of its proper divisors (257185724).

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

255644356 is a wasteful number, since it uses less digits than its factorization.

255644356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804 (or 1802 counting only the distinct ones).

The product of its digits is 432000, while the sum is 40.

The square root of 255644356 is about 15988.8822623722. The cubic root of 255644356 is about 634.6662482392. Note that the first 3 decimals are identical.

The spelling of 255644356 in words is "two hundred fifty-five million, six hundred forty-four thousand, three hundred fifty-six".