5861887561 has 2 divisors, whose sum is σ = 5861887562. Its totient is φ = 5861887560.

The previous prime is 5861887531. The next prime is 5861887579. The reversal of 5861887561 is 1657881685.

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., 4142209600 + 1719677961 = 64360^2 + 41469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5861887561 is a prime.

It is not a weakly prime, because it can be changed into another prime (5861887501) 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, 2930943780 + 2930943781.

It is an arithmetic number, because the mean of its divisors is an integer number (2930943781).

Almost surely, 2^5861887561 is an apocalyptic number.

It is an amenable number.

5861887561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5861887561 is an equidigital number, since it uses as much as digits as its factorization.

5861887561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3225600, while the sum is 55.

The square root of 5861887561 is about 76562.9646826715. The cubic root of 5861887561 is about 1803.0696142393.

The spelling of 5861887561 in words is "five billion, eight hundred sixty-one million, eight hundred eighty-seven thousand, five hundred sixty-one".