4516621 has 2 divisors, whose sum is σ = 4516622. Its totient is φ = 4516620.

The previous prime is 4516597. The next prime is 4516643. The reversal of 4516621 is 1266154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3759721 + 756900 = 1939^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 4516621 - 2¹⁹ = 3992333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4516651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2258310 + 2258311.

It is an arithmetic number, because the mean of its divisors is an integer number (2258311).

Almost surely, 2^4516621 is an apocalyptic number.

It is an amenable number.

4516621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4516621 is an equidigital number, since it uses as much as digits as its factorization.

4516621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 4516621 is about 2125.2343400199. The cubic root of 4516621 is about 165.2993768967.

The spelling of 4516621 in words is "four million, five hundred sixteen thousand, six hundred twenty-one".