5641591 has 4 divisors (see below), whose sum is σ = 5646384. Its totient is φ = 5636800.

The previous prime is 5641577. The next prime is 5641607. The reversal of 5641591 is 1951465.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5641591 - 2⁹ = 5641079 is a prime.

It is a super-2 number, since 2×5641591² = 63655098022562, 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 (5641541) 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, 726 + ... + 3436.

It is an arithmetic number, because the mean of its divisors is an integer number (1411596).

Almost surely, 2^5641591 is an apocalyptic number.

5641591 is a deficient number, since it is larger than the sum of its proper divisors (4793).

5641591 is a wasteful number, since it uses less digits than its factorization.

5641591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4792.

The product of its digits is 5400, while the sum is 31.

The square root of 5641591 is about 2375.2033597147. The cubic root of 5641591 is about 178.0193452021.

The spelling of 5641591 in words is "five million, six hundred forty-one thousand, five hundred ninety-one".