5055121987 has 2 divisors, whose sum is σ = 5055121988. Its totient is φ = 5055121986.

The previous prime is 5055121961. The next prime is 5055122021. The reversal of 5055121987 is 7891215505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5055121987 - 2¹¹ = 5055119939 is a prime.

It is not a weakly prime, because it can be changed into another prime (5055121187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2527560993 + 2527560994.

It is an arithmetic number, because the mean of its divisors is an integer number (2527560994).

Almost surely, 2^5055121987 is an apocalyptic number.

5055121987 is a deficient number, since it is larger than the sum of its proper divisors (1).

5055121987 is an equidigital number, since it uses as much as digits as its factorization.

5055121987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 43.

The square root of 5055121987 is about 71099.3810591907. The cubic root of 5055121987 is about 1716.2368134324.

The spelling of 5055121987 in words is "five billion, fifty-five million, one hundred twenty-one thousand, nine hundred eighty-seven".