4511252561 has 2 divisors, whose sum is σ = 4511252562. Its totient is φ = 4511252560.

The previous prime is 4511252533. The next prime is 4511252611. The reversal of 4511252561 is 1652521154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4225000000 + 286252561 = 65000^2 + 16919^2 .

It is a cyclic number.

It is not a de Polignac number, because 4511252561 - 2¹⁸ = 4510990417 is a prime.

It is not a weakly prime, because it can be changed into another prime (4511257561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2255626280 + 2255626281.

It is an arithmetic number, because the mean of its divisors is an integer number (2255626281).

Almost surely, 2^4511252561 is an apocalyptic number.

It is an amenable number.

4511252561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4511252561 is an equidigital number, since it uses as much as digits as its factorization.

4511252561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 32.

The square root of 4511252561 is about 67165.8585964625. The cubic root of 4511252561 is about 1652.3385952278.

The spelling of 4511252561 in words is "four billion, five hundred eleven million, two hundred fifty-two thousand, five hundred sixty-one".