259971 has 8 divisors (see below), whose sum is σ = 349200. Its totient is φ = 172032.

The previous prime is 259967. The next prime is 259991. The reversal of 259971 is 179952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 259971 - 2² = 259967 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (259991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355 + ... + 803.

It is an arithmetic number, because the mean of its divisors is an integer number (43650).

2²⁵⁹⁹⁷¹ is an apocalyptic number.

259971 is a deficient number, since it is larger than the sum of its proper divisors (89229).

259971 is a wasteful number, since it uses less digits than its factorization.

259971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645.

The product of its digits is 5670, while the sum is 33.

The square root of 259971 is about 509.8735137267. The cubic root of 259971 is about 63.8226699180.

The spelling of 259971 in words is "two hundred fifty-nine thousand, nine hundred seventy-one".