259955 has 4 divisors (see below), whose sum is σ = 311952. Its totient is φ = 207960.

The previous prime is 259949. The next prime is 259967. The reversal of 259955 is 559952.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 259955 - 2¹² = 255859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25991 + ... + 26000.

It is an arithmetic number, because the mean of its divisors is an integer number (77988).

2²⁵⁹⁹⁵⁵ is an apocalyptic number.

259955 is a deficient number, since it is larger than the sum of its proper divisors (51997).

259955 is an equidigital number, since it uses as much as digits as its factorization.

259955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51996.

The product of its digits is 20250, while the sum is 35.

The square root of 259955 is about 509.8578233194. The cubic root of 259955 is about 63.8213605621.

The spelling of 259955 in words is "two hundred fifty-nine thousand, nine hundred fifty-five".