5217301987 has 4 divisors (see below), whose sum is σ = 5219030880. Its totient is φ = 5215573096.

The previous prime is 5217301981. The next prime is 5217302047. The reversal of 5217301987 is 7891037125.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5217301987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5217301981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859912 + ... + 865957.

It is an arithmetic number, because the mean of its divisors is an integer number (1304757720).

Almost surely, 2^5217301987 is an apocalyptic number.

5217301987 is a deficient number, since it is larger than the sum of its proper divisors (1728893).

5217301987 is a wasteful number, since it uses less digits than its factorization.

5217301987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728892.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 5217301987 is about 72230.8935774714. The cubic root of 5217301987 is about 1734.3975780615.

The spelling of 5217301987 in words is "five billion, two hundred seventeen million, three hundred one thousand, nine hundred eighty-seven".