4641521 has 4 divisors (see below), whose sum is σ = 4648512. Its totient is φ = 4634532.

The previous prime is 4641509. The next prime is 4641557. The reversal of 4641521 is 1251464.

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 4641521 - 2¹⁰ = 4640497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4647521) 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, 2381 + ... + 3866.

It is an arithmetic number, because the mean of its divisors is an integer number (1162128).

Almost surely, 2^4641521 is an apocalyptic number.

It is an amenable number.

4641521 is a deficient number, since it is larger than the sum of its proper divisors (6991).

4641521 is an equidigital number, since it uses as much as digits as its factorization.

4641521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6990.

The product of its digits is 960, while the sum is 23.

The square root of 4641521 is about 2154.4189471874. The cubic root of 4641521 is about 166.8092411115.

Adding to 4641521 its reverse (1251464), we get a palindrome (5892985).

The spelling of 4641521 in words is "four million, six hundred forty-one thousand, five hundred twenty-one".