5661509053 has 2 divisors, whose sum is σ = 5661509054. Its totient is φ = 5661509052.

The previous prime is 5661509047. The next prime is 5661509069. The reversal of 5661509053 is 3509051665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5661509049 + 4 = 75243^2 + 2^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5661509053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5661508997 and 5661509015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5661509023) 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, 2830754526 + 2830754527.

It is an arithmetic number, because the mean of its divisors is an integer number (2830754527).

Almost surely, 2^5661509053 is an apocalyptic number.

It is an amenable number.

5661509053 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661509053 is an equidigital number, since it uses as much as digits as its factorization.

5661509053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 121500, while the sum is 40.

The square root of 5661509053 is about 75243.0000265805. Note that the first 4 decimals coincide. The cubic root of 5661509053 is about 1782.2860260349.

The spelling of 5661509053 in words is "five billion, six hundred sixty-one million, five hundred nine thousand, fifty-three".