2041521 has 4 divisors (see below), whose sum is σ = 2722032. Its totient is φ = 1361012.

The previous prime is 2041519. The next prime is 2041537. The reversal of 2041521 is 1251402.

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.

It is a cyclic number.

It is not a de Polignac number, because 2041521 - 2¹ = 2041519 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2041521.

It is not an unprimeable number, because it can be changed into a prime (2041561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340251 + ... + 340256.

It is an arithmetic number, because the mean of its divisors is an integer number (680508).

2^2041521 is an apocalyptic number.

It is an amenable number.

2041521 is a deficient number, since it is larger than the sum of its proper divisors (680511).

2041521 is an equidigital number, since it uses as much as digits as its factorization.

2041521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680510.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2041521 is about 1428.8180429992. The cubic root of 2041521 is about 126.8580263962.

Adding to 2041521 its reverse (1251402), we get a palindrome (3292923).

The spelling of 2041521 in words is "two million, forty-one thousand, five hundred twenty-one".