2020521 has 8 divisors (see below), whose sum is σ = 2759904. Its totient is φ = 1314080.

The previous prime is 2020511. The next prime is 2020537. The reversal of 2020521 is 1250202.

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

It is a cyclic number.

It is not a de Polignac number, because 2020521 - 2⁵ = 2020489 is a prime.

It is a super-2 number, since 2×2020521² = 8165010222882, which contains 22 as substring.

It is a Curzon number.

2020521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2020497 and 2020506.

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 7 ways as a sum of consecutive naturals, for example, 8091 + ... + 8336.

It is an arithmetic number, because the mean of its divisors is an integer number (344988).

2^2020521 is an apocalyptic number.

It is an amenable number.

2020521 is a deficient number, since it is larger than the sum of its proper divisors (739383).

2020521 is a wasteful number, since it uses less digits than its factorization.

2020521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16471.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 2020521 is about 1421.4503156987. The cubic root of 2020521 is about 126.4215535336.

Adding to 2020521 its reverse (1250202), we get a palindrome (3270723).

The spelling of 2020521 in words is "two million, twenty thousand, five hundred twenty-one".