4555220321 has 8 divisors (see below), whose sum is σ = 4772346624. Its totient is φ = 4342480560.

The previous prime is 4555220317. The next prime is 4555220333. The reversal of 4555220321 is 1230225554.

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 4555220321 - 2² = 4555220317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4555220821) 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, 1094510 + ... + 1098663.

It is an arithmetic number, because the mean of its divisors is an integer number (596543328).

Almost surely, 2^4555220321 is an apocalyptic number.

It is an amenable number.

4555220321 is a deficient number, since it is larger than the sum of its proper divisors (217126303).

4555220321 is a wasteful number, since it uses less digits than its factorization.

4555220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193271.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 4555220321 is about 67492.3723171737. The cubic root of 4555220321 is about 1657.6892803746.

Adding to 4555220321 its reverse (1230225554), we get a palindrome (5785445875).

The spelling of 4555220321 in words is "four billion, five hundred fifty-five million, two hundred twenty thousand, three hundred twenty-one".