5635051021 has 2 divisors, whose sum is σ = 5635051022. Its totient is φ = 5635051020.

The previous prime is 5635050959. The next prime is 5635051031. The reversal of 5635051021 is 1201505365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4391712900 + 1243338121 = 66270^2 + 35261^2 .

It is a cyclic number.

It is not a de Polignac number, because 5635051021 - 2⁷ = 5635050893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5635051031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2817525510 + 2817525511.

It is an arithmetic number, because the mean of its divisors is an integer number (2817525511).

Almost surely, 2^5635051021 is an apocalyptic number.

It is an amenable number.

5635051021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5635051021 is an equidigital number, since it uses as much as digits as its factorization.

5635051021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 5635051021 is about 75066.9769006319. The cubic root of 5635051021 is about 1779.5052933382.

Adding to 5635051021 its reverse (1201505365), we get a palindrome (6836556386).

The spelling of 5635051021 in words is "five billion, six hundred thirty-five million, fifty-one thousand, twenty-one".