255564234 has 80 divisors (see below), whose sum is σ = 593679240. Its totient is φ = 82114560.

The previous prime is 255564233. The next prime is 255564241. The reversal of 255564234 is 432465552.

255564234 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 642 + 3 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 169130025 + 86434209 = 13005^2 + 9297^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (255564233) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 723802 + ... + 724154.

Almost surely, 2^255564234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255564234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296839620).

255564234 is an abundant number, since it is smaller than the sum of its proper divisors (338115006).

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

255564234 is a wasteful number, since it uses less digits than its factorization.

255564234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 508 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 255564234 is about 15986.3765125184. The cubic root of 255564234 is about 634.5999373125.

The spelling of 255564234 in words is "two hundred fifty-five million, five hundred sixty-four thousand, two hundred thirty-four".