4540513221 has 48 divisors (see below), whose sum is σ = 7038555264. Its totient is φ = 2810529792.

The previous prime is 4540513199. The next prime is 4540513249. The reversal of 4540513221 is 1223150454.

It is not a de Polignac number, because 4540513221 - 2⁹ = 4540512709 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4540513291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5516616 + ... + 5517438.

It is an arithmetic number, because the mean of its divisors is an integer number (146636568).

Almost surely, 2^4540513221 is an apocalyptic number.

It is an amenable number.

4540513221 is a deficient number, since it is larger than the sum of its proper divisors (2498042043).

4540513221 is a wasteful number, since it uses less digits than its factorization.

4540513221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290 (or 1287 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 4540513221 is about 67383.3304386181. The cubic root of 4540513221 is about 1655.9033377118.

Adding to 4540513221 its reverse (1223150454), we get a palindrome (5763663675).

The spelling of 4540513221 in words is "four billion, five hundred forty million, five hundred thirteen thousand, two hundred twenty-one".