23529 has 16 divisors (see below), whose sum is σ = 36864. Its totient is φ = 13200.

The previous prime is 23509. The next prime is 23531. The reversal of 23529 is 92532.

It is not a de Polignac number, because 23529 - 2⁵ = 23497 is a prime.

It is a super-2 number, since 2×23529² = 1107227682, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁷ + 3⁹ + 5⁵ + 2⁹ + 9² .

It is a Curzon number.

23529 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23509) 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, 744 + ... + 774.

It is an arithmetic number, because the mean of its divisors is an integer number (2304).

2²³⁵²⁹ is an apocalyptic number.

It is an amenable number.

23529 is a deficient number, since it is larger than the sum of its proper divisors (13335).

23529 is a wasteful number, since it uses less digits than its factorization.

23529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68.

The product of its digits is 540, while the sum is 21.

The square root of 23529 is about 153.3916555749. The cubic root of 23529 is about 28.6550490753.

It can be divided in two parts, 23 and 529, that multiplied together give a cube (12167 = 23³).

The spelling of 23529 in words is "twenty-three thousand, five hundred twenty-nine".