4551113221 has 8 divisors (see below), whose sum is σ = 4666665920. Its totient is φ = 4436961408.

The previous prime is 4551113209. The next prime is 4551113251. The reversal of 4551113221 is 1223111554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4551113221 - 2¹³ = 4551105029 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 (4551113251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343641 + ... + 356638.

It is an arithmetic number, because the mean of its divisors is an integer number (583333240).

Almost surely, 2^4551113221 is an apocalyptic number.

It is an amenable number.

4551113221 is a deficient number, since it is larger than the sum of its proper divisors (115552699).

4551113221 is an equidigital number, since it uses as much as digits as its factorization.

4551113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700443.

The product of its digits is 1200, while the sum is 25.

The square root of 4551113221 is about 67461.9390545513. The cubic root of 4551113221 is about 1657.1909259325.

Adding to 4551113221 its reverse (1223111554), we get a palindrome (5774224775).

The spelling of 4551113221 in words is "four billion, five hundred fifty-one million, one hundred thirteen thousand, two hundred twenty-one".