2020531 has 4 divisors (see below), whose sum is σ = 2034064. Its totient is φ = 2007000.

The previous prime is 2020511. The next prime is 2020537. The reversal of 2020531 is 1350202.

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 2020531 - 2⁹ = 2020019 is a prime.

It is a super-2 number, since 2×2020531² = 8165091043922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020537) 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 3 ways as a sum of consecutive naturals, for example, 6540 + ... + 6841.

It is an arithmetic number, because the mean of its divisors is an integer number (508516).

2^2020531 is an apocalyptic number.

2020531 is a deficient number, since it is larger than the sum of its proper divisors (13533).

2020531 is a wasteful number, since it uses less digits than its factorization.

2020531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13532.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 2020531 is about 1421.4538332285. The cubic root of 2020531 is about 126.4217620959.

Adding to 2020531 its reverse (1350202), we get a palindrome (3370733).

The spelling of 2020531 in words is "two million, twenty thousand, five hundred thirty-one".