6521241 has 4 divisors (see below), whose sum is σ = 8694992. Its totient is φ = 4347492.

The previous prime is 6521209. The next prime is 6521243. The reversal of 6521241 is 1421256.

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 not a de Polignac number, because 6521241 - 2⁵ = 6521209 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6521243) 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, 1086871 + ... + 1086876.

It is an arithmetic number, because the mean of its divisors is an integer number (2173748).

Almost surely, 2^6521241 is an apocalyptic number.

It is an amenable number.

6521241 is a deficient number, since it is larger than the sum of its proper divisors (2173751).

6521241 is a wasteful number, since it uses less digits than its factorization.

6521241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173750.

The product of its digits is 480, while the sum is 21.

The square root of 6521241 is about 2553.6720619531. The cubic root of 6521241 is about 186.8286246746.

Adding to 6521241 its reverse (1421256), we get a palindrome (7942497).

The spelling of 6521241 in words is "six million, five hundred twenty-one thousand, two hundred forty-one".