259523 has 4 divisors (see below), whose sum is σ = 283128. Its totient is φ = 235920.

The previous prime is 259517. The next prime is 259531. The reversal of 259523 is 325952.

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

It is a cyclic number.

It is not a de Polignac number, because 259523 - 2⁴ = 259507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 259492 and 259501.

It is not an unprimeable number, because it can be changed into a prime (259583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11786 + ... + 11807.

It is an arithmetic number, because the mean of its divisors is an integer number (70782).

2²⁵⁹⁵²³ is an apocalyptic number.

259523 is a deficient number, since it is larger than the sum of its proper divisors (23605).

259523 is a wasteful number, since it uses less digits than its factorization.

259523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23604.

The product of its digits is 2700, while the sum is 26.

The square root of 259523 is about 509.4339996506. The cubic root of 259523 is about 63.7859876264.

It can be divided in two parts, 2595 and 23, that multiplied together give a triangular number (59685 = T₃₄₅).

The spelling of 259523 in words is "two hundred fifty-nine thousand, five hundred twenty-three".