5506591 has 4 divisors (see below), whose sum is σ = 5746032. Its totient is φ = 5267152.

The previous prime is 5506583. The next prime is 5506597. The reversal of 5506591 is 1956055.

It is a happy number.

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 5506591 - 2³ = 5506583 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5506597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119686 + ... + 119731.

It is an arithmetic number, because the mean of its divisors is an integer number (1436508).

Almost surely, 2^5506591 is an apocalyptic number.

5506591 is a deficient number, since it is larger than the sum of its proper divisors (239441).

5506591 is a wasteful number, since it uses less digits than its factorization.

5506591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239440.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 5506591 is about 2346.6126650984. The cubic root of 5506591 is about 176.5878993037.

The spelling of 5506591 in words is "five million, five hundred six thousand, five hundred ninety-one".