5199391 has 2 divisors, whose sum is σ = 5199392. Its totient is φ = 5199390.

The previous prime is 5199329. The next prime is 5199427. The reversal of 5199391 is 1939915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5199391 - 2¹¹ = 5197343 is a prime.

5199391 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5199391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5199301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2599695 + 2599696.

It is an arithmetic number, because the mean of its divisors is an integer number (2599696).

Almost surely, 2^5199391 is an apocalyptic number.

5199391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5199391 is an equidigital number, since it uses as much as digits as its factorization.

5199391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10935, while the sum is 37.

The square root of 5199391 is about 2280.2173142049. The cubic root of 5199391 is about 173.2410574757.

It can be divided in two parts, 5 and 199391, that added together give a triangular number (199396 = T₆₃₁).

The spelling of 5199391 in words is "five million, one hundred ninety-nine thousand, three hundred ninety-one".