259651 has 8 divisors (see below), whose sum is σ = 303200. Its totient is φ = 222264.

The previous prime is 259643. The next prime is 259657. The reversal of 259651 is 156952.

It is not a de Polignac number, because 259651 - 2³ = 259643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36 + ... + 721.

It is an arithmetic number, because the mean of its divisors is an integer number (37900).

2²⁵⁹⁶⁵¹ is an apocalyptic number.

259651 is a deficient number, since it is larger than the sum of its proper divisors (43549).

259651 is an frugal number, since it uses more digits than its factorization.

259651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 764 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 259651 is about 509.5596137843. The cubic root of 259651 is about 63.7964725860.

The spelling of 259651 in words is "two hundred fifty-nine thousand, six hundred fifty-one".