5613625021 has 2 divisors, whose sum is σ = 5613625022. Its totient is φ = 5613625020.

The previous prime is 5613625001. The next prime is 5613625051. The reversal of 5613625021 is 1205263165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5071433796 + 542191225 = 71214^2 + 23285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5613625021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5613625001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2806812510 + 2806812511.

It is an arithmetic number, because the mean of its divisors is an integer number (2806812511).

Almost surely, 2^5613625021 is an apocalyptic number.

It is an amenable number.

5613625021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5613625021 is an equidigital number, since it uses as much as digits as its factorization.

5613625021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 5613625021 is about 74924.1284300325. The cubic root of 5613625021 is about 1777.2470406885.

Adding to 5613625021 its reverse (1205263165), we get a palindrome (6818888186).

The spelling of 5613625021 in words is "five billion, six hundred thirteen million, six hundred twenty-five thousand, twenty-one".