5287891806 has 12 divisors (see below), whose sum is σ = 11457098952. Its totient is φ = 1762630596.

The previous prime is 5287891783. The next prime is 5287891823. The reversal of 5287891806 is 6081987825.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146885866 + ... + 146885901.

It is an arithmetic number, because the mean of its divisors is an integer number (954758246).

Almost surely, 2^5287891806 is an apocalyptic number.

5287891806 is an abundant number, since it is smaller than the sum of its proper divisors (6169207146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5287891806 is a wasteful number, since it uses less digits than its factorization.

5287891806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293771775 (or 293771772 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The square root of 5287891806 is about 72717.8919248901. The cubic root of 5287891806 is about 1742.1846657136.

The spelling of 5287891806 in words is "five billion, two hundred eighty-seven million, eight hundred ninety-one thousand, eight hundred six".