5591539 has 4 divisors (see below), whose sum is σ = 5727960. Its totient is φ = 5455120.

The previous prime is 5591513. The next prime is 5591557. The reversal of 5591539 is 9351955.

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 5591539 - 2¹⁵ = 5558771 is a prime.

It is a Duffinian number.

5591539 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5591498 and 5591507.

It is not an unprimeable number, because it can be changed into a prime (5591569) 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, 68149 + ... + 68230.

It is an arithmetic number, because the mean of its divisors is an integer number (1431990).

Almost surely, 2^5591539 is an apocalyptic number.

5591539 is a deficient number, since it is larger than the sum of its proper divisors (136421).

5591539 is a wasteful number, since it uses less digits than its factorization.

5591539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136420.

The product of its digits is 30375, while the sum is 37.

The square root of 5591539 is about 2364.6435249314. The cubic root of 5591539 is about 177.4913200807.

The spelling of 5591539 in words is "five million, five hundred ninety-one thousand, five hundred thirty-nine".