5189891 has 4 divisors (see below), whose sum is σ = 5931312.
Its totient is φ = 4448472.
The previous prime is 5189851. The next prime is 5189893. The reversal of 5189891 is 1989815.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1989815 = 5 ⋅397963.
It is not a de Polignac number, because 5189891 - 210 = 5188867 is a prime.
It is an Ulam number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (5189893) 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, 370700 + ... + 370713.
It is an arithmetic number, because the mean of its divisors is an integer number (1482828).
Almost surely, 25189891 is an apocalyptic number.
5189891 is a deficient number, since it is larger than the sum of its proper divisors (741421).
5189891 is an equidigital number, since it uses as much as digits as its factorization.
5189891 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 741420.
The product of its digits is 25920, while the sum is 41.
The square root of 5189891 is about 2278.1332270085.
The cubic root of 5189891 is about 173.1354814300.
The spelling of 5189891 in words is "five million, one hundred eighty-nine thousand, eight hundred ninety-one".