6521941 has 4 divisors (see below), whose sum is σ = 6527052. Its totient is φ = 6516832.

The previous prime is 6521929. The next prime is 6521947. The reversal of 6521941 is 1491256.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2090916 + 4431025 = 1446^2 + 2105^2 .

It is a cyclic number.

It is not a de Polignac number, because 6521941 - 2⁵ = 6521909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6521947) 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, 1161 + ... + 3793.

It is an arithmetic number, because the mean of its divisors is an integer number (1631763).

Almost surely, 2^6521941 is an apocalyptic number.

It is an amenable number.

6521941 is a deficient number, since it is larger than the sum of its proper divisors (5111).

6521941 is a wasteful number, since it uses less digits than its factorization.

6521941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110.

The product of its digits is 2160, while the sum is 28.

The square root of 6521941 is about 2553.8091158111. The cubic root of 6521941 is about 186.8353092591.

The spelling of 6521941 in words is "six million, five hundred twenty-one thousand, nine hundred forty-one".