255570 has 32 divisors (see below), whose sum is σ = 701568. Its totient is φ = 58368.

The previous prime is 255551. The next prime is 255571. The reversal of 255570 is 75552.

It is a self number, because there is not a number n which added to its sum of digits gives 255570.

It is not an unprimeable number, because it can be changed into a prime (255571) by changing a digit.

255570 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399 + ... + 818.

It is an arithmetic number, because the mean of its divisors is an integer number (21924).

2²⁵⁵⁵⁷⁰ is an apocalyptic number.

255570 is an abundant number, since it is smaller than the sum of its proper divisors (445998).

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

255570 is a wasteful number, since it uses less digits than its factorization.

255570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234.

The product of its (nonzero) digits is 1750, while the sum is 24.

The square root of 255570 is about 505.5393159785. The cubic root of 255570 is about 63.4604709858.

The spelling of 255570 in words is "two hundred fifty-five thousand, five hundred seventy".