5644591 has 4 divisors (see below), whose sum is σ = 5890032. Its totient is φ = 5399152.

The previous prime is 5644547. The next prime is 5644601. The reversal of 5644591 is 1954465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1954465 = 5 ⋅390893.

It is a cyclic number.

It is not a de Polignac number, because 5644591 - 2¹³ = 5636399 is a prime.

It is a super-2 number, since 2×5644591² = 63722815114562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5642591) 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, 122686 + ... + 122731.

It is an arithmetic number, because the mean of its divisors is an integer number (1472508).

Almost surely, 2^5644591 is an apocalyptic number.

5644591 is a deficient number, since it is larger than the sum of its proper divisors (245441).

5644591 is a wasteful number, since it uses less digits than its factorization.

5644591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245440.

The product of its digits is 21600, while the sum is 34.

The square root of 5644591 is about 2375.8348006543. The cubic root of 5644591 is about 178.0508944228.

The spelling of 5644591 in words is "five million, six hundred forty-four thousand, five hundred ninety-one".