5633855621 has 2 divisors, whose sum is σ = 5633855622. Its totient is φ = 5633855620.

The previous prime is 5633855597. The next prime is 5633855651. The reversal of 5633855621 is 1265583365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4200854596 + 1433001025 = 64814^2 + 37855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5633855621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5633855651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2816927810 + 2816927811.

It is an arithmetic number, because the mean of its divisors is an integer number (2816927811).

Almost surely, 2^5633855621 is an apocalyptic number.

It is an amenable number.

5633855621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5633855621 is an equidigital number, since it uses as much as digits as its factorization.

5633855621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 44.

The square root of 5633855621 is about 75059.0142554510. The cubic root of 5633855621 is about 1779.3794517644.

The spelling of 5633855621 in words is "five billion, six hundred thirty-three million, eight hundred fifty-five thousand, six hundred twenty-one".