5205191 has 4 divisors (see below), whose sum is σ = 5290584. Its totient is φ = 5119800.

The previous prime is 5205173. The next prime is 5205227. The reversal of 5205191 is 1915025.

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 5205191 - 2⁶ = 5205127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5205491) 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, 42605 + ... + 42726.

It is an arithmetic number, because the mean of its divisors is an integer number (1322646).

Almost surely, 2^5205191 is an apocalyptic number.

5205191 is a deficient number, since it is larger than the sum of its proper divisors (85393).

5205191 is an equidigital number, since it uses as much as digits as its factorization.

5205191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85392.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 5205191 is about 2281.4887683265. The cubic root of 5205191 is about 173.3054512187.

The spelling of 5205191 in words is "five million, two hundred five thousand, one hundred ninety-one".