255261144 has 64 divisors (see below), whose sum is σ = 659340000. Its totient is φ = 82308096.

The previous prime is 255261109. The next prime is 255261151. The reversal of 255261144 is 441162552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91482 + ... + 94230.

Almost surely, 2^255261144 is an apocalyptic number.

255261144 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 255261144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329670000).

255261144 is an abundant number, since it is smaller than the sum of its proper divisors (404078856).

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

255261144 is a wasteful number, since it uses less digits than its factorization.

255261144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884 (or 2880 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 255261144 is about 15976.8940661194. The cubic root of 255261144 is about 634.3489671636.

The spelling of 255261144 in words is "two hundred fifty-five million, two hundred sixty-one thousand, one hundred forty-four".