2020539 has 4 divisors (see below), whose sum is σ = 2694056. Its totient is φ = 1347024.

The previous prime is 2020537. The next prime is 2020547. The reversal of 2020539 is 9350202.

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

It is not a de Polignac number, because 2020539 - 2¹ = 2020537 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020537) 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, 336754 + ... + 336759.

It is an arithmetic number, because the mean of its divisors is an integer number (673514).

2^2020539 is an apocalyptic number.

2020539 is a deficient number, since it is larger than the sum of its proper divisors (673517).

2020539 is an equidigital number, since it uses as much as digits as its factorization.

2020539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673516.

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

The square root of 2020539 is about 1421.4566472461. The cubic root of 2020539 is about 126.4219289452.

The spelling of 2020539 in words is "two million, twenty thousand, five hundred thirty-nine".