2103539 has 4 divisors (see below), whose sum is σ = 2111256. Its totient is φ = 2095824.

The previous prime is 2103523. The next prime is 2103553. The reversal of 2103539 is 9353012.

It is a happy number.

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 2103539 - 2⁴ = 2103523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103589) 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, 3434 + ... + 3999.

It is an arithmetic number, because the mean of its divisors is an integer number (527814).

2^2103539 is an apocalyptic number.

2103539 is a deficient number, since it is larger than the sum of its proper divisors (7717).

2103539 is an equidigital number, since it uses as much as digits as its factorization.

2103539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7716.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 2103539 is about 1450.3582316104. The cubic root of 2103539 is about 128.1298121532.

The spelling of 2103539 in words is "two million, one hundred three thousand, five hundred thirty-nine".