4524504221 has 4 divisors (see below), whose sum is σ = 4528048572. Its totient is φ = 4520959872.

The previous prime is 4524504203. The next prime is 4524504227. The reversal of 4524504221 is 1224054254.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3319372996 + 1205131225 = 57614^2 + 34715^2 .

It is a cyclic number.

It is not a de Polignac number, because 4524504221 - 2¹⁰ = 4524503197 is a prime.

It is a super-2 number, since 2×4524504221² = 40942276891693633682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4524504227) 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, 1770260 + ... + 1772813.

It is an arithmetic number, because the mean of its divisors is an integer number (1132012143).

Almost surely, 2^4524504221 is an apocalyptic number.

It is an amenable number.

4524504221 is a deficient number, since it is larger than the sum of its proper divisors (3544351).

4524504221 is a wasteful number, since it uses less digits than its factorization.

4524504221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3544350.

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 4524504221 is about 67264.4350381388. The cubic root of 4524504221 is about 1653.9549108792.

Adding to 4524504221 its reverse (1224054254), we get a palindrome (5748558475).

The spelling of 4524504221 in words is "four billion, five hundred twenty-four million, five hundred four thousand, two hundred twenty-one".