5278591 has 2 divisors, whose sum is σ = 5278592. Its totient is φ = 5278590.

The previous prime is 5278579. The next prime is 5278601. The reversal of 5278591 is 1958725.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5278591 - 2¹³ = 5270399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5278591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5278541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639295 + 2639296.

It is an arithmetic number, because the mean of its divisors is an integer number (2639296).

Almost surely, 2^5278591 is an apocalyptic number.

5278591 is a deficient number, since it is larger than the sum of its proper divisors (1).

5278591 is an equidigital number, since it uses as much as digits as its factorization.

5278591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 37.

The square root of 5278591 is about 2297.5184438868. The cubic root of 5278591 is about 174.1162630742.

The spelling of 5278591 in words is "five million, two hundred seventy-eight thousand, five hundred ninety-one".