4513234221 has 20 divisors (see below), whose sum is σ = 6779678400. Its totient is φ = 2992004136.

The previous prime is 4513234189. The next prime is 4513234223. The reversal of 4513234221 is 1224323154.

It is not a de Polignac number, because 4513234221 - 2⁵ = 4513234189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4513234223) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 141141 + ... + 170138.

It is an arithmetic number, because the mean of its divisors is an integer number (338983920).

Almost surely, 2^4513234221 is an apocalyptic number.

It is an amenable number.

4513234221 is a deficient number, since it is larger than the sum of its proper divisors (2266444179).

4513234221 is a wasteful number, since it uses less digits than its factorization.

4513234221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311470 (or 311461 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 4513234221 is about 67180.6089656829. The cubic root of 4513234221 is about 1652.5805009904.

Adding to 4513234221 its reverse (1224323154), we get a palindrome (5737557375).

The spelling of 4513234221 in words is "four billion, five hundred thirteen million, two hundred thirty-four thousand, two hundred twenty-one".