255320550 has 72 divisors (see below), whose sum is σ = 689468520. Its totient is φ = 67737600.

The previous prime is 255320531. The next prime is 255320561. The reversal of 255320550 is 55023552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 93606 + ... + 96294.

Almost surely, 2^255320550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255320550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344734260).

255320550 is an abundant number, since it is smaller than the sum of its proper divisors (434147970).

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

255320550 is a wasteful number, since it uses less digits than its factorization.

255320550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918 (or 2910 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 255320550 is about 15978.7530802626. The cubic root of 255320550 is about 634.3981732578.

The spelling of 255320550 in words is "two hundred fifty-five million, three hundred twenty thousand, five hundred fifty".