2130604561 has 2 divisors, whose sum is σ = 2130604562. Its totient is φ = 2130604560.

The previous prime is 2130604529. The next prime is 2130604573. The reversal of 2130604561 is 1654060312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1925542161 + 205062400 = 43881^2 + 14320^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130604561 - 2⁵ = 2130604529 is a prime.

It is not a weakly prime, because it can be changed into another prime (2130604661) 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, 1065302280 + 1065302281.

It is an arithmetic number, because the mean of its divisors is an integer number (1065302281).

Almost surely, 2^2130604561 is an apocalyptic number.

It is an amenable number.

2130604561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130604561 is an equidigital number, since it uses as much as digits as its factorization.

2130604561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2130604561 is about 46158.4722559142. The cubic root of 2130604561 is about 1286.7700701333.

Adding to 2130604561 its reverse (1654060312), we get a palindrome (3784664873).

The spelling of 2130604561 in words is "two billion, one hundred thirty million, six hundred four thousand, five hundred sixty-one".