5855216987 has 4 divisors (see below), whose sum is σ = 5868029736. Its totient is φ = 5842404240.

The previous prime is 5855216981. The next prime is 5855217031. The reversal of 5855216987 is 7896125585.

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

It is a cyclic number.

It is not a de Polignac number, because 5855216987 - 2¹⁶ = 5855151451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5855216981) 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, 6405689 + ... + 6406602.

It is an arithmetic number, because the mean of its divisors is an integer number (1467007434).

Almost surely, 2^5855216987 is an apocalyptic number.

5855216987 is a deficient number, since it is larger than the sum of its proper divisors (12812749).

5855216987 is a wasteful number, since it uses less digits than its factorization.

5855216987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12812748.

The product of its digits is 6048000, while the sum is 56.

The square root of 5855216987 is about 76519.3896146591. The cubic root of 5855216987 is about 1802.3854162848.

The spelling of 5855216987 in words is "five billion, eight hundred fifty-five million, two hundred sixteen thousand, nine hundred eighty-seven".