255520144 has 40 divisors (see below), whose sum is σ = 541090368. Its totient is φ = 115927680.

The previous prime is 255520129. The next prime is 255520163. The reversal of 255520144 is 441025552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126954 + ... + 128950.

Almost surely, 2^255520144 is an apocalyptic number.

It is an amenable number.

255520144 is an abundant number, since it is smaller than the sum of its proper divisors (285570224).

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

255520144 is a wasteful number, since it uses less digits than its factorization.

255520144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743 (or 2737 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 255520144 is about 15984.9974663745. The cubic root of 255520144 is about 634.5634414383.

Adding to 255520144 its reverse (441025552), we get a palindrome (696545696).

The spelling of 255520144 in words is "two hundred fifty-five million, five hundred twenty thousand, one hundred forty-four".