2020557 has 16 divisors (see below), whose sum is σ = 3359232. Its totient is φ = 1049520.

The previous prime is 2020547. The next prime is 2020561. The reversal of 2020557 is 7550202.

It is not a de Polignac number, because 2020557 - 2⁶ = 2020493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4143 + ... + 4604.

It is an arithmetic number, because the mean of its divisors is an integer number (209952).

2^2020557 is an apocalyptic number.

It is an amenable number.

2020557 is a deficient number, since it is larger than the sum of its proper divisors (1338675).

2020557 is a wasteful number, since it uses less digits than its factorization.

2020557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8768.

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 2020557 is about 1421.4629787652. The cubic root of 2020557 is about 126.4223043546.

Adding to 2020557 its reverse (7550202), we get a palindrome (9570759).

The spelling of 2020557 in words is "two million, twenty thousand, five hundred fifty-seven".