5591993 has 4 divisors (see below), whose sum is σ = 6100368. Its totient is φ = 5083620.

The previous prime is 5591987. The next prime is 5592001. The reversal of 5591993 is 3991955.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5591993 - 2¹⁰ = 5590969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5591993.

It is not an unprimeable number, because it can be changed into a prime (5591903) 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 in 3 ways as a sum of consecutive naturals, for example, 254171 + ... + 254192.

It is an arithmetic number, because the mean of its divisors is an integer number (1525092).

Almost surely, 2^5591993 is an apocalyptic number.

It is an amenable number.

5591993 is a deficient number, since it is larger than the sum of its proper divisors (508375).

5591993 is a wasteful number, since it uses less digits than its factorization.

5591993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508374.

The product of its digits is 54675, while the sum is 41.

The square root of 5591993 is about 2364.7395205392. The cubic root of 5591993 is about 177.4961237003.

It can be divided in two parts, 559 and 1993, that added together give a palindrome (2552).

The spelling of 5591993 in words is "five million, five hundred ninety-one thousand, nine hundred ninety-three".