2012521 has 4 divisors (see below), whose sum is σ = 2300032. Its totient is φ = 1725012.

The previous prime is 2012519. The next prime is 2012531. The reversal of 2012521 is 1252102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1252102 = 2 ⋅626051.

It is a cyclic number.

It is not a de Polignac number, because 2012521 - 2¹ = 2012519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2012531) 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, 143745 + ... + 143758.

It is an arithmetic number, because the mean of its divisors is an integer number (575008).

2^2012521 is an apocalyptic number.

It is an amenable number.

2012521 is a deficient number, since it is larger than the sum of its proper divisors (287511).

2012521 is an equidigital number, since it uses as much as digits as its factorization.

2012521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287510.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2012521 is about 1418.6334974193. The cubic root of 2012521 is about 126.2544827347.

Adding to 2012521 its reverse (1252102), we get a palindrome (3264623).

The spelling of 2012521 in words is "two million, twelve thousand, five hundred twenty-one".