255970 has 32 divisors (see below), whose sum is σ = 544320. Its totient is φ = 85440.

The previous prime is 255961. The next prime is 255971. The reversal of 255970 is 79552.

255970 is a nontrivial binomial coefficient, being equal to C(716, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1341 + ... + 1519.

It is an arithmetic number, because the mean of its divisors is an integer number (17010).

2²⁵⁵⁹⁷⁰ is an apocalyptic number.

255970 is the 715-th triangular number and also the 358-th hexagonal number.

255970 is the 239-th centered nonagonal number.

255970 is an abundant number, since it is smaller than the sum of its proper divisors (288350).

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

255970 is a wasteful number, since it uses less digits than its factorization.

255970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 255970 is about 505.9347784053. The cubic root of 255970 is about 63.4935616677.

It can be divided in two parts, 255 and 970, that added together give a triangular number (1225 = T₄₉).

The spelling of 255970 in words is "two hundred fifty-five thousand, nine hundred seventy".