4552045221 has 4 divisors (see below), whose sum is σ = 6069393632. Its totient is φ = 3034696812.

The previous prime is 4552045187. The next prime is 4552045229. The reversal of 4552045221 is 1225402554.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4552045221 - 2⁷ = 4552045093 is a prime.

It is a super-2 number, since 2×4552045221² = 41442231388057877682, 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 (4552045229) 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, 758674201 + ... + 758674206.

It is an arithmetic number, because the mean of its divisors is an integer number (1517348408).

Almost surely, 2^4552045221 is an apocalyptic number.

It is an amenable number.

4552045221 is a deficient number, since it is larger than the sum of its proper divisors (1517348411).

4552045221 is a wasteful number, since it uses less digits than its factorization.

4552045221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517348410.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 4552045221 is about 67468.8462996071. The cubic root of 4552045221 is about 1657.3040408599.

Adding to 4552045221 its reverse (1225402554), we get a palindrome (5777447775).

The spelling of 4552045221 in words is "four billion, five hundred fifty-two million, forty-five thousand, two hundred twenty-one".