4505510621 has 2 divisors, whose sum is σ = 4505510622. Its totient is φ = 4505510620.

The previous prime is 4505510591. The next prime is 4505510627. The reversal of 4505510621 is 1260155054.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2569070596 + 1936440025 = 50686^2 + 44005^2 .

It is a cyclic number.

It is not a de Polignac number, because 4505510621 - 2¹⁴ = 4505494237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4505510627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2252755310 + 2252755311.

It is an arithmetic number, because the mean of its divisors is an integer number (2252755311).

Almost surely, 2^4505510621 is an apocalyptic number.

It is an amenable number.

4505510621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4505510621 is an equidigital number, since it uses as much as digits as its factorization.

4505510621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 4505510621 is about 67123.1005019881. The cubic root of 4505510621 is about 1651.6372632370.

Adding to 4505510621 its reverse (1260155054), we get a palindrome (5765665675).

The spelling of 4505510621 in words is "four billion, five hundred five million, five hundred ten thousand, six hundred twenty-one".