5128187 has 4 divisors (see below), whose sum is σ = 5141760. Its totient is φ = 5114616.

The previous prime is 5128153. The next prime is 5128213. The reversal of 5128187 is 7818215.

It is a happy number.

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 5128187 - 2²² = 933883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5128987) 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, 6203 + ... + 6980.

It is an arithmetic number, because the mean of its divisors is an integer number (1285440).

Almost surely, 2^5128187 is an apocalyptic number.

5128187 is a deficient number, since it is larger than the sum of its proper divisors (13573).

5128187 is a wasteful number, since it uses less digits than its factorization.

5128187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13572.

The product of its digits is 4480, while the sum is 32.

The square root of 5128187 is about 2264.5500656863. The cubic root of 5128187 is about 172.4465927222.

The spelling of 5128187 in words is "five million, one hundred twenty-eight thousand, one hundred eighty-seven".