5591779 has 2 divisors, whose sum is σ = 5591780. Its totient is φ = 5591778.

The previous prime is 5591777. The next prime is 5591791. The reversal of 5591779 is 9771955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5591779 - 2¹ = 5591777 is a prime.

Together with 5591777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5591771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2795889 + 2795890.

It is an arithmetic number, because the mean of its divisors is an integer number (2795890).

Almost surely, 2^5591779 is an apocalyptic number.

5591779 is a deficient number, since it is larger than the sum of its proper divisors (1).

5591779 is an equidigital number, since it uses as much as digits as its factorization.

5591779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99225, while the sum is 43.

The square root of 5591779 is about 2364.6942719937. The cubic root of 5591779 is about 177.4938594715.

The spelling of 5591779 in words is "five million, five hundred ninety-one thousand, seven hundred seventy-nine".