5187590491 has 4 divisors (see below), whose sum is σ = 5205295872. Its totient is φ = 5169885112.

The previous prime is 5187590479. The next prime is 5187590497. The reversal of 5187590491 is 1940957815.

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 5187590491 - 2²⁵ = 5154036059 is a prime.

It is a super-2 number, since 2×5187590491² = 53822190204627242162, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5187590497) 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 in 3 ways as a sum of consecutive naturals, for example, 8852251 + ... + 8852836.

It is an arithmetic number, because the mean of its divisors is an integer number (1301323968).

Almost surely, 2^5187590491 is an apocalyptic number.

5187590491 is a deficient number, since it is larger than the sum of its proper divisors (17705381).

5187590491 is a wasteful number, since it uses less digits than its factorization.

5187590491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17705380.

The product of its (nonzero) digits is 453600, while the sum is 49.

The square root of 5187590491 is about 72024.9296493929. The cubic root of 5187590491 is about 1731.0989588309.

The spelling of 5187590491 in words is "five billion, one hundred eighty-seven million, five hundred ninety thousand, four hundred ninety-one".