2045200561 has 2 divisors, whose sum is σ = 2045200562. Its totient is φ = 2045200560.

The previous prime is 2045200501. The next prime is 2045200579. The reversal of 2045200561 is 1650025402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1277633536 + 767567025 = 35744^2 + 27705^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045200561 - 2¹⁵ = 2045167793 is a prime.

It is not a weakly prime, because it can be changed into another prime (2045200501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022600280 + 1022600281.

It is an arithmetic number, because the mean of its divisors is an integer number (1022600281).

Almost surely, 2^2045200561 is an apocalyptic number.

It is an amenable number.

2045200561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045200561 is an equidigital number, since it uses as much as digits as its factorization.

2045200561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2045200561 is about 45223.8936957003. The cubic root of 2045200561 is about 1269.3419537190.

Adding to 2045200561 its reverse (1650025402), we get a palindrome (3695225963).

The spelling of 2045200561 in words is "two billion, forty-five million, two hundred thousand, five hundred sixty-one".