2845028561 has 2 divisors, whose sum is σ = 2845028562. Its totient is φ = 2845028560.

The previous prime is 2845028521. The next prime is 2845028573. The reversal of 2845028561 is 1658205482.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2009818561 + 835210000 = 44831^2 + 28900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2845028561 is a prime.

It is not a weakly prime, because it can be changed into another prime (2845028521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1422514280 + 1422514281.

It is an arithmetic number, because the mean of its divisors is an integer number (1422514281).

Almost surely, 2^2845028561 is an apocalyptic number.

It is an amenable number.

2845028561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2845028561 is an equidigital number, since it uses as much as digits as its factorization.

2845028561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 2845028561 is about 53338.8091449369. The cubic root of 2845028561 is about 1416.9750725527.

The spelling of 2845028561 in words is "two billion, eight hundred forty-five million, twenty-eight thousand, five hundred sixty-one".