5821111 has 4 divisors (see below), whose sum is σ = 5833552. Its totient is φ = 5808672.

The previous prime is 5821097. The next prime is 5821129. The reversal of 5821111 is 1111285.

It is a happy number.

5821111 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5821111 - 2⁹ = 5820599 is a prime.

It is a super-4 number, since 4×5821111⁴ (a number of 28 digits) contains 4444 as substring.

It is an Ulam number.

It is a Duffinian number.

5821111 is a modest number, since divided by 1111 gives 582 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5821171) 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, 5490 + ... + 6463.

It is an arithmetic number, because the mean of its divisors is an integer number (1458388).

Almost surely, 2^5821111 is an apocalyptic number.

5821111 is a deficient number, since it is larger than the sum of its proper divisors (12441).

5821111 is a wasteful number, since it uses less digits than its factorization.

5821111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12440.

The product of its digits is 80, while the sum is 19.

The square root of 5821111 is about 2412.6978675334. The cubic root of 5821111 is about 179.8879034564.

Adding to 5821111 its reverse (1111285), we get a palindrome (6932396).

The spelling of 5821111 in words is "five million, eight hundred twenty-one thousand, one hundred eleven".