2023539 has 16 divisors (see below), whose sum is σ = 3107328. Its totient is φ = 1147392.

The previous prime is 2023531. The next prime is 2023543. The reversal of 2023539 is 9353202.

It is not a de Polignac number, because 2023539 - 2³ = 2023531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2023531) 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, 3219 + ... + 3795.

It is an arithmetic number, because the mean of its divisors is an integer number (194208).

2^2023539 is an apocalyptic number.

2023539 is a deficient number, since it is larger than the sum of its proper divisors (1083789).

2023539 is a wasteful number, since it uses less digits than its factorization.

2023539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 2023539 is about 1422.5115113770. The cubic root of 2023539 is about 126.4844664226.

It can be divided in two parts, 202 and 3539, that added together give a triangular number (3741 = T₈₆).

The spelling of 2023539 in words is "two million, twenty-three thousand, five hundred thirty-nine".