2020571 has 4 divisors (see below), whose sum is σ = 2309232. Its totient is φ = 1731912.

The previous prime is 2020561. The next prime is 2020591. The reversal of 2020571 is 1750202.

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

It is not a de Polignac number, because 2020571 - 2⁶ = 2020507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020511) 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, 144320 + ... + 144333.

It is an arithmetic number, because the mean of its divisors is an integer number (577308).

2^2020571 is an apocalyptic number.

2020571 is a deficient number, since it is larger than the sum of its proper divisors (288661).

2020571 is an equidigital number, since it uses as much as digits as its factorization.

2020571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288660.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 2020571 is about 1421.4679032606. The cubic root of 2020571 is about 126.4225963381.

Adding to 2020571 its reverse (1750202), we get a palindrome (3770773).

The spelling of 2020571 in words is "two million, twenty thousand, five hundred seventy-one".