255553344 has 126 divisors (see below), whose sum is σ = 773708130. Its totient is φ = 80635392.

The previous prime is 255553321. The next prime is 255553349. The reversal of 255553344 is 443355552.

It can be written as a sum of positive squares in only one way, i.e., 254721600 + 831744 = 15960^2 + 912^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 255553299 and 255553308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255553349) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 207322 + ... + 208550.

Almost surely, 2^255553344 is an apocalyptic number.

255553344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255553344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386854065).

255553344 is an abundant number, since it is smaller than the sum of its proper divisors (518154786).

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

255553344 is a wasteful number, since it uses less digits than its factorization.

255553344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1253 counting only the distinct ones).

The product of its digits is 180000, while the sum is 36.

The square root of 255553344 is about 15986.0359063778. The cubic root of 255553344 is about 634.5909234123.

The spelling of 255553344 in words is "two hundred fifty-five million, five hundred fifty-three thousand, three hundred forty-four".