5509591 has 4 divisors (see below), whose sum is σ = 5522472. Its totient is φ = 5496712.

The previous prime is 5509589. The next prime is 5509619. The reversal of 5509591 is 1959055.

5509591 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5509591 - 2¹ = 5509589 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 (5509561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5776 + ... + 6661.

It is an arithmetic number, because the mean of its divisors is an integer number (1380618).

Almost surely, 2^5509591 is an apocalyptic number.

5509591 is a deficient number, since it is larger than the sum of its proper divisors (12881).

5509591 is a wasteful number, since it uses less digits than its factorization.

5509591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12880.

The product of its (nonzero) digits is 10125, while the sum is 34.

The square root of 5509591 is about 2347.2517973153. The cubic root of 5509591 is about 176.6199619429.

The spelling of 5509591 in words is "five million, five hundred nine thousand, five hundred ninety-one".