4505343021 has 6 divisors (see below), whose sum is σ = 6507717710. Its totient is φ = 3003562008.

The previous prime is 4505343019. The next prime is 4505343041. The reversal of 4505343021 is 1203435054.

It can be written as a sum of positive squares in only one way, i.e., 3322946025 + 1182396996 = 57645^2 + 34386^2 .

It is not a de Polignac number, because 4505343021 - 2¹ = 4505343019 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 (4505343001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250296826 + ... + 250296843.

Almost surely, 2^4505343021 is an apocalyptic number.

It is an amenable number.

4505343021 is a deficient number, since it is larger than the sum of its proper divisors (2002374689).

4505343021 is a wasteful number, since it uses less digits than its factorization.

4505343021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500593675 (or 500593672 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 4505343021 is about 67121.8520379168. The cubic root of 4505343021 is about 1651.6167832914.

Adding to 4505343021 its reverse (1203435054), we get a palindrome (5708778075).

The spelling of 4505343021 in words is "four billion, five hundred five million, three hundred forty-three thousand, twenty-one".