5161771487 has 2 divisors, whose sum is σ = 5161771488. Its totient is φ = 5161771486.

The previous prime is 5161771463. The next prime is 5161771493. The reversal of 5161771487 is 7841771615.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5161771487 - 2²⁶ = 5094662623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5161771427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2580885743 + 2580885744.

It is an arithmetic number, because the mean of its divisors is an integer number (2580885744).

Almost surely, 2^5161771487 is an apocalyptic number.

5161771487 is a deficient number, since it is larger than the sum of its proper divisors (1).

5161771487 is an equidigital number, since it uses as much as digits as its factorization.

5161771487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329280, while the sum is 47.

The square root of 5161771487 is about 71845.4694952994. The cubic root of 5161771487 is about 1728.2222471087. Note that the first 4 decimals are identical.

The spelling of 5161771487 in words is "five billion, one hundred sixty-one million, seven hundred seventy-one thousand, four hundred eighty-seven".