2020505 has 8 divisors (see below), whose sum is σ = 2449224. Its totient is φ = 1600000.

The previous prime is 2020493. The next prime is 2020507. The reversal of 2020505 is 5050202.

It can be written as a sum of positive squares in 4 ways, for example, as 203401 + 1817104 = 451^2 + 1348^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2020505 - 2⁴ = 2020489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2020505.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1496 + ... + 2505.

It is an arithmetic number, because the mean of its divisors is an integer number (306153).

2^2020505 is an apocalyptic number.

It is an amenable number.

2020505 is a deficient number, since it is larger than the sum of its proper divisors (428719).

2020505 is a wasteful number, since it uses less digits than its factorization.

2020505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107.

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 2020505 is about 1421.4446876330. Note that the first 3 decimals coincide. The cubic root of 2020505 is about 126.4212198325.

Adding to 2020505 its reverse (5050202), we get a palindrome (7070707).

It can be divided in two parts, 2020 and 505, that multiplied together give a square (1020100 = 1010²).

The spelling of 2020505 in words is "two million, twenty thousand, five hundred five".