5628994561 has 2 divisors, whose sum is σ = 5628994562. Its totient is φ = 5628994560.

The previous prime is 5628994541. The next prime is 5628994573. The reversal of 5628994561 is 1654998265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5620350961 + 8643600 = 74969^2 + 2940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5628994561 is a prime.

It is not a weakly prime, because it can be changed into another prime (5628994541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2814497280 + 2814497281.

It is an arithmetic number, because the mean of its divisors is an integer number (2814497281).

Almost surely, 2^5628994561 is an apocalyptic number.

It is an amenable number.

5628994561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5628994561 is an equidigital number, since it uses as much as digits as its factorization.

5628994561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4665600, while the sum is 55.

The square root of 5628994561 is about 75026.6256804876. The cubic root of 5628994561 is about 1778.8675371430.

The spelling of 5628994561 in words is "five billion, six hundred twenty-eight million, nine hundred ninety-four thousand, five hundred sixty-one".