5005621 has 2 divisors, whose sum is σ = 5005622. Its totient is φ = 5005620.

The previous prime is 5005613. The next prime is 5005639. The reversal of 5005621 is 1265005.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2722500 + 2283121 = 1650^2 + 1511^2 .

It is a cyclic number.

It is not a de Polignac number, because 5005621 - 2³ = 5005613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5005921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2502810 + 2502811.

It is an arithmetic number, because the mean of its divisors is an integer number (2502811).

Almost surely, 2^5005621 is an apocalyptic number.

It is an amenable number.

5005621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5005621 is an equidigital number, since it uses as much as digits as its factorization.

5005621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 5005621 is about 2237.3245182584. The cubic root of 5005621 is about 171.0616491689.

The spelling of 5005621 in words is "five million, five thousand, six hundred twenty-one".