5606402621 has 2 divisors, whose sum is σ = 5606402622. Its totient is φ = 5606402620.

The previous prime is 5606402551. The next prime is 5606402663. The reversal of 5606402621 is 1262046065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5554720900 + 51681721 = 74530^2 + 7189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5606402621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5606404621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2803201310 + 2803201311.

It is an arithmetic number, because the mean of its divisors is an integer number (2803201311).

Almost surely, 2^5606402621 is an apocalyptic number.

It is an amenable number.

5606402621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5606402621 is an equidigital number, since it uses as much as digits as its factorization.

5606402621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 5606402621 is about 74875.9148257970. The cubic root of 5606402621 is about 1776.4845210584.

Adding to 5606402621 its reverse (1262046065), we get a palindrome (6868448686).

The spelling of 5606402621 in words is "five billion, six hundred six million, four hundred two thousand, six hundred twenty-one".