255491488 has 72 divisors (see below), whose sum is σ = 590188032. Its totient is φ = 108549504.

The previous prime is 255491477. The next prime is 255491503. The reversal of 255491488 is 884194552.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198495 + ... + 199777.

It is an arithmetic number, because the mean of its divisors is an integer number (8197056).

Almost surely, 2^255491488 is an apocalyptic number.

255491488 is a gapful number since it is divisible by the number (28) 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 255491488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295094016).

255491488 is an abundant number, since it is smaller than the sum of its proper divisors (334696544).

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

255491488 is a wasteful number, since it uses less digits than its factorization.

255491488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1419 counting only the distinct ones).

The product of its digits is 460800, while the sum is 46.

The square root of 255491488 is about 15984.1011007814. The cubic root of 255491488 is about 634.5397189384.

The spelling of 255491488 in words is "two hundred fifty-five million, four hundred ninety-one thousand, four hundred eighty-eight".