5015021987 has 2 divisors, whose sum is σ = 5015021988. Its totient is φ = 5015021986.

The previous prime is 5015021971. The next prime is 5015022037. The reversal of 5015021987 is 7891205105.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5015021987 - 2⁴ = 5015021971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5015021987.

It is not a weakly prime, because it can be changed into another prime (5015081987) 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, 2507510993 + 2507510994.

It is an arithmetic number, because the mean of its divisors is an integer number (2507510994).

Almost surely, 2^5015021987 is an apocalyptic number.

5015021987 is a deficient number, since it is larger than the sum of its proper divisors (1).

5015021987 is an equidigital number, since it uses as much as digits as its factorization.

5015021987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 38.

The square root of 5015021987 is about 70816.8199441347. The cubic root of 5015021987 is about 1711.6867169703.

The spelling of 5015021987 in words is "five billion, fifteen million, twenty-one thousand, nine hundred eighty-seven".