5487227861 has 2 divisors, whose sum is σ = 5487227862. Its totient is φ = 5487227860.

The previous prime is 5487227843. The next prime is 5487227891. The reversal of 5487227861 is 1687227845.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3331482961 + 2155744900 = 57719^2 + 46430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5487227861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5487227831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2743613930 + 2743613931.

It is an arithmetic number, because the mean of its divisors is an integer number (2743613931).

Almost surely, 2^5487227861 is an apocalyptic number.

It is an amenable number.

5487227861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5487227861 is an equidigital number, since it uses as much as digits as its factorization.

5487227861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1505280, while the sum is 50.

The square root of 5487227861 is about 74075.8250780914. The cubic root of 5487227861 is about 1763.8067419780.

The spelling of 5487227861 in words is "five billion, four hundred eighty-seven million, two hundred twenty-seven thousand, eight hundred sixty-one".