5491823 has 4 divisors (see below), whose sum is σ = 5520768. Its totient is φ = 5462880.

The previous prime is 5491819. The next prime is 5491841. The reversal of 5491823 is 3281945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3281945 = 5 ⋅656389.

It is a cyclic number.

It is not a de Polignac number, because 5491823 - 2² = 5491819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5491823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5491813) 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, 14186 + ... + 14567.

It is an arithmetic number, because the mean of its divisors is an integer number (1380192).

Almost surely, 2^5491823 is an apocalyptic number.

5491823 is a deficient number, since it is larger than the sum of its proper divisors (28945).

5491823 is a wasteful number, since it uses less digits than its factorization.

5491823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28944.

The product of its digits is 8640, while the sum is 32.

The square root of 5491823 is about 2343.4638892033. The cubic root of 5491823 is about 176.4298956261.

The spelling of 5491823 in words is "five million, four hundred ninety-one thousand, eight hundred twenty-three".