5781585461 has 2 divisors, whose sum is σ = 5781585462. Its totient is φ = 5781585460.

The previous prime is 5781585457. The next prime is 5781585503. The reversal of 5781585461 is 1645851875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5284563025 + 497022436 = 72695^2 + 22294^2 .

It is a cyclic number.

It is not a de Polignac number, because 5781585461 - 2² = 5781585457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5781585431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2890792730 + 2890792731.

It is an arithmetic number, because the mean of its divisors is an integer number (2890792731).

Almost surely, 2^5781585461 is an apocalyptic number.

It is an amenable number.

5781585461 is a deficient number, since it is larger than the sum of its proper divisors (1).

5781585461 is an equidigital number, since it uses as much as digits as its factorization.

5781585461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344000, while the sum is 50.

The square root of 5781585461 is about 76036.7375746750. The cubic root of 5781585461 is about 1794.7983014754.

The spelling of 5781585461 in words is "five billion, seven hundred eighty-one million, five hundred eighty-five thousand, four hundred sixty-one".